CN107582076A - A kind of attention force checking device and detection method based on wireless action acquisition module - Google Patents
A kind of attention force checking device and detection method based on wireless action acquisition module Download PDFInfo
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- CN107582076A CN107582076A CN201710696356.7A CN201710696356A CN107582076A CN 107582076 A CN107582076 A CN 107582076A CN 201710696356 A CN201710696356 A CN 201710696356A CN 107582076 A CN107582076 A CN 107582076A
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Abstract
The invention discloses a kind of attention force checking device and detection method based on wireless action collection.In wireless action acquisition module, electric power management circuit, battery and acceleration transducer are connected with control circuit, and control circuit is connected with wireless transmitter module;Routing node module includes wireless receiving module and embedded wireless gateway;Wireless transmitter module and wireless receiving module wireless connection, wireless receiving module are connected with embedded wireless gateway;Data storage processing module includes database and data processing module;Embedded wireless gateway is connected with database, data processing module connection database;Acceleration signal is gathered as action data, calculating action frequency and movement range by the use of acceleration transducer, and it is horizontal that the notice for judging to obtain each user and colony user is calculated by group analysis and personal characteristics analysis.The present invention have it is cost-effective, it is easy to use, teaching efficiency can be lifted in the case of instructor's teaching process is not disturbed.
Description
Technical field
The present invention relates to one kind to pay attention to force checking device and method, and in particular to a kind of attention based on wireless action collection
Force checking device and detection method.
Background technology
With the development of society, people to educating pay attention to day by day, for special education, classroom instruction, grasp
The notice of learner has vital influence to improving efficiency of teaching.So special education, classroom religion are aided in recent years
The apparatus and method educated emerge in an endless stream, but lack in the prior art can Real-time Feedback learner motion characteristic, pay attention to force information
Etc. device.
The detection method for learner's notice has following several at present, for example, the positive model of woods using the sense organs such as eye, ear come
Observational learning person's notice, but which needs teacher to have more experience with students, sees that the positive model of document woods discusses student's row of teacher
To observe research of educational development 2007.10B;Qin Xiaowen etc. detects the notice of learner, but which using video monitoring
It is huge to memory space requirements and may cause to block, see document Qin Xiao texts, Li Kai, ripple Li Hong junior physicses course teaching matter
The classroom instruction assessment of amount --- based on to 7 extract as the analysis educational and scientific research .2014 (4) of class;Bag is newly medium to use evaluation quantity
Table obtains the notice situation of learner, but this mode has certain subjectivity and can not provide real-time assessment, sees document bag
In new, Yu Li duckweed middle and primary schools curriculum of integrative practical activities teaching-guiding assesses the Preliminary development Jiangsu educational research of scale
.2013 the phase in year 10.
Although above detection method can realize the detection of notice, use environment and condition are restricted.
The content of the invention
In order to solve problem present in background technology, it is an object of the invention to provide one kind to be based on acceleration transducer
Attention force checking device and detection method, apply in classroom instruction, attention that can in real time to instructor feedback learning person
Force information, so as to neatly Teaching content, the scatterbrained learner of concern, improve efficiency of teaching.And
It can apply to special education, health detection etc..
The technical solution adopted by the present invention is:
First, a kind of attention force checking device based on wireless action collection:
Acquisition module, routing node module and data storage processing module are acted including wireless,
The wireless action acquisition module includes electric power management circuit, battery, acceleration transducer, control circuit and wireless
Transmitter module;Electric power management circuit, battery and acceleration transducer are connected with control circuit, control circuit and wireless transmission mould
Block is connected;
Described routing node module includes wireless receiving module and embedded wireless gateway;In wireless action acquisition module
Wireless transmitter module and wireless receiving module wireless connection, wireless receiving module is connected with embedded wireless gateway;
Described data storage processing module includes database and data processing module;It is embedded in routing node module
Radio network gateway is connected with database by network data interface, data processing module connection database.
It is each wirelessly to act in acquisition module including wirelessly acting acquisition module described in multiple structure identicals, power supply pipe
Reason circuit, battery, acceleration transducer, control circuit and wireless transmitter module are integrated in one.
Wireless connection is coupled by high-frequency electromagnetic between the wireless transmitter module and wireless receiving module.
Near described acceleration transducer binding user, the wireless action acquisition module passes through acceleration transducer
Acceleration signal is gathered, and is sent to by routing node module in data storage processing module and in database purchase, data
Processing module reads data calculating processing from database and obtains user's notice testing result, is presented on data in real time and shows
In terminal.
Preferably, described wireless action acquisition module is tied up in the wrist of user by bandage, or is placed on and is made
Tied up on desktop where user, by bandage on the chair where user.
2nd, a kind of notice detection method based on wireless action collection is as follows the step of this method:
Step 1):Multiple wireless action acquisition modules are bound with respective user (i.e. target learner) respectively, often
Individual wireless action acquisition module use control circuit as main control device, by the use of acceleration transducer collection acceleration signal as
Action data, acceleration information information contain the molar behavior data (three-dimensional acceleration data) of target learner, then by nothing
Line transmitter module transmits action data to embedded wireless gateway through wireless receiving module by Zigbee protocol;
Step 2):Embedded wireless gateway receives each wireless transmission mould as routing node by wireless receiving module
The data of block, are then written to database by network data interface;
Step 3):Final data storage processing module read from database and calculate each user operating frequency and
Movement range, the attention for judging to obtain each user and colony user is calculated by group analysis and personal characteristics analysis
Power is horizontal, and will be presented in real time on video data terminal, is referred to for instructor.
Described step 3) detailed process is:
The movement range and operating frequency of user's individual are first calculated in the following ways:
Movement range:
V (i)=v (i-1)+[a (i)+a (i-1)] Δ t/2
A (i)=A (i-1)+[v (i)+v (i-1)] Δ t/2
Wherein, v (i) is the responsiveness at current time, and A (i) is the movement range at current time, and Δ t is the sampling interval,
I represents the moment, and a (i) represents the acceleration at current time;
Operating frequency B is in sampling interval Δ T, and the wireless acquisition module institute that acts being added by what acceleration transducer was carried out
The times of collection of rate signal.
The attention change rate r of user's individual is calculated using below equation:
Wherein, the maximum actuation amplitude before C expression current times in 10min, before D expression current times in 10min
Maximum actuation frequency;
It can be seen that r ∈ [0,1], when r values are bigger, illustrate that personal notice is not concentrated.Threshold value pair can be set in specific implementation
Individual is divided according to notice.
Calculate the attention change rate of user colony:
Under at a time, the movement range formula according in, the movement range value A of all users is obtained1,A2,…Ak,
K represents the quantity of user, is averaged after removing wherein maximum and minimum valueThen after maximum and minimum value being removed
Each movement range value and averageMake the difference, obtain difference DELTA A1,ΔA2,…ΔAk-2, then conduct that all differences are averaged
The average amplitude offset at current time
Under at a time, the operating frequency formula according in, the operating frequency value f of all users is obtained1,f2,…fk,
K represents the quantity of user, is averaged after removing wherein maximum and minimum valueThen after maximum and minimum value being removed
Each operating frequency value and averageMake the difference, obtain difference DELTA f1,Δf2,…Δfk-2, then conduct that all differences are averaged
The averaged frequency offset amount at current time(saying and letter that replace with frequency)
Colony attention change rate R is calculated using below equation:
Wherein, the maximum average amplitude offset in the 10min before E expression current times, F were represented before current time
10min in maximum averaged frequency offset amount.
The invention has the advantages that:
The present invention realizes the real-time detection of learner's notice, has cost-effective, easy to use, measurement accuracy standard,
The advantages that scalability is strong, and cost is cheap, teaching efficiency can be lifted in the case of instructor's teaching process is not disturbed.
Brief description of the drawings
Fig. 1 is the wireless sensing planar network architecture block diagram based on acceleration transducer.
Fig. 2 is the connection block diagram of wireless action acquisition module.
Fig. 3 is embodiment practical application schematic diagram.
In figure:1st, acquisition module is wirelessly acted, 1.1, electric power management circuit, 1.2, battery, 1.3, acceleration transducer,
1.4th, control circuit, 1.5, wireless transmitter module, 2, routing node module, 2.1, wireless receiving module, 2.2, embedded radio
Gateway, 3, data storage processing module, 3.1, database, 3.2, data processing module.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Present invention specific implementation includes multiple structure identicals and wirelessly acts acquisition module 1, the and of routing node module 2
Data storage processing module 3.
As shown in figure 1, multiple structure identicals wirelessly act acquisition module 1:Include electric power management circuit 1.1
(RT9013-25), battery 1.2, acceleration transducer 1.3 (MMA8451Q), control circuit 1.4 (STM8L151G4) and wireless
Transmitter module 1.5 (DRF1607H-WU);Electric power management circuit 1.1, battery 1.2, acceleration transducer 1.3 are and control circuit
1.4 are connected, and control circuit 1.4 is connected with wireless transmitter module 1.5;Control circuit 1.4 is used as main control device, passes through I2C buses
Acceleration transducer 1.3 is controlled with interrupt signal line and the collection of information, then believed data by wireless transmitter module 1.5
Breath is launched.
As shown in Fig. 2 routing node module 2, including wireless receiving module 2.1 and embedded wireless gateway 2.2;Described
Data storage processing module 3, including database 3.1 (being used herein as MySQL database), data processing module 3.2;Wireless action
Wireless transmitter module 1.5 in acquisition module 1 is wirelessly connected with wireless receiving module 2.1 by high-frequency electromagnetic coupling, is wirelessly connect
Receive module 2.1 with embedded wireless gateway 2.2 to be connected, embedded wireless gateway 2.2 passes through network data interface with database 3.1
It is connected.Wireless transmitter module 1.5 is launched data by producing high-frequency alternating magnetic field, wireless receiving module 2.1 by from
High-frequency alternating magnetic field experiences voltage and obtains data;Embedded wireless gateway 2.2 is used as routing node, is obtained by Zigbee protocol
The data transmitted, then write data into database 3.1;Data processing module 3.2 reads corresponding data from database 3.1
And calculate, result of calculation is presented on video data terminal in real time.
Apparatus of the present invention are applied in the notice of classroom instruction detection learner, and implementation process is as follows:
As shown in figure 3, when applying in the notice of classroom instruction detection learner, multiple wireless action acquisition modules 1
Bound one by one with multiple target learners, binding method can be:Wireless action acquisition module 1 is tied up in wrist by bandage
On, or place on the table, tied up by bandage it is first-class in chair.Routing node module 2 and data display are placed on dais eventually
Hold (database 3.1 and data processing module 3.2 are run on a computer platform).
When learner has some actions to produce, the wireless action acquisition module 1 of binding collects the action data of learner
(three-dimensional acceleration data), and pass through wireless communication transmissions data to embedded gateway 2.2.Embedded gateway 2.2 receives each nothing
Line acts the data of acquisition module 1, by handling in write into Databasce 3.1.
Read finally by data processing module 3.2 from the data of storage and calculate each learner operating frequency and
Movement range, analyzed by group analysis and personal characteristics, judge that the notice of each learner is horizontal, and by itself and colony
Notice level be presented in real time on video data terminal, referred to for instructor.Therefore, instructor real-time can obtain
To the attention force information of learner, so as to neatly Teaching content, the scatterbrained learner of concern, improve
Efficiency of teaching.
Claims (7)
- A kind of 1. attention force checking device based on wireless action collection, it is characterised in that:Acquisition module (1), routing node module (2) and data storage processing module (3) are acted including wireless,The wireless action acquisition module (1) include electric power management circuit (1.1), battery (1.2), acceleration transducer (1.3), Control circuit (1.4) and wireless transmitter module (1.5);Electric power management circuit (1.1), battery (1.2) and acceleration transducer (1.3) it is connected with control circuit (1.4), control circuit (1.4) is connected with wireless transmitter module (1.5);Described routing node module (2) includes wireless receiving module (2.1) and embedded wireless gateway (2.2);Wireless action Wireless transmitter module (1.5) and wireless receiving module (2.1) wireless connection in acquisition module (1), wireless receiving module (2.1) It is connected with embedded wireless gateway (2.2);Described data storage processing module (3) includes database (3.1) and data processing module (3.2);Routing node module (2) embedded wireless gateway (2.2) in is connected with database (3.1) by network data interface, data processing module (3.2) Connect database (3.1).
- A kind of 2. attention force checking device based on wireless action collection according to claim 1, it is characterised in that:Including Acquisition module (1) is wirelessly acted described in multiple structure identicals, each wirelessly to act in acquisition module (1), electric power management circuit (1.1), battery (1.2), acceleration transducer (1.3), control circuit (1.4) and wireless transmitter module (1.5) are integrated in one.
- A kind of 3. attention force checking device based on wireless action collection according to claim 1, it is characterised in that:It is described Wireless connection is coupled by high-frequency electromagnetic between wireless transmitter module (1.5) and wireless receiving module (2.1).
- A kind of 4. attention force checking device based on wireless action collection according to claim 1, it is characterised in that:It is described Acceleration transducer (1.3) binding user near, the wireless action acquisition module (1) passes through acceleration transducer (1.3) acceleration signal is gathered, and is sent to by routing node module (2) in data storage processing module (3) and in data Storehouse (3.1) stores, and data processing module (3.2) reads data calculating processing from database (3.1) and obtains user's notice Testing result.
- A kind of 5. attention force checking device based on wireless action collection according to claim 1, it is characterised in that:It is described Wireless action acquisition module (1) tied up by bandage in the wrist of user, or be placed on the desktop where user, Tied up by bandage on the chair where user.
- 6. applied to a kind of notice detection method based on wireless action collection of claim 1 described device, its feature exists It is as follows in, this method the step of:Step 1):Multiple wireless action acquisition modules (1) are bound with respective user respectively, each wireless action collection mould Block (1) uses control circuit (1.4) to be used as main control device, by the use of acceleration transducer (1.3) collection acceleration signal as move Make data, then action data is transmitted to embedding by Zigbee protocol through wireless receiving module (2.1) by wireless transmitter module (1.5) Enter formula radio network gateway (2.2);Step 2):Embedded wireless gateway (2.2) is used as routing node, is received by wireless receiving module (2.1) each wireless The data of transmitter module (1.5), database (3.1) is then written to by network data interface;Step 3):Final data storage processing module (3) reads from database (3.1) and calculates the action frequency of each user Rate and movement range, calculated by group analysis and personal characteristics analysis and judge to obtain each user and colony user Notice is horizontal, and will present in real time.
- A kind of 7. notice detection method based on wireless action collection according to claim 6, it is characterised in that:It is described Step 3) detailed process be:(1) movement range and operating frequency of user's individual are first calculated in the following ways:Movement range:V (i)=v (i-1)+[a (i)+a (i-1)] Δ t/2A (i)=A (i-1)+[v (i)+v (i-1)] Δ t/2Wherein, v (i) is the responsiveness at current time, and A (i) is the movement range at current time, and Δ t is the sampling interval, i tables Show the moment, a (i) represents the acceleration at current time;Operating frequency B is in sampling interval Δ T, wirelessly acts acquisition module (1) institute and is carried out by acceleration transducer (1.3) Acceleration signal times of collection.(2) the attention change rate r of user's individual is calculated using below equation:<mrow> <mi>r</mi> <mo>=</mo> <mfrac> <mrow> <mi>A</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> <mi>C</mi> </mfrac> <mo>&CenterDot;</mo> <mfrac> <mi>B</mi> <mi>D</mi> </mfrac> </mrow>Wherein, the maximum actuation amplitude before C expression current times in 10min, before D expression current times in 10min most Big-movement frequency;(3) the attention change rate of user colony is calculated:(3.1) under at a time, according to movement range formula in (1), the movement range value A of all users is obtained1,A2,… Ak, the quantity of k expression users, averaged after removing wherein maximum and minimum valueThen maximum and minimum value will be removed Each movement range value and average afterwardsMake the difference, obtain difference DELTA A1,ΔA2,…ΔAk-2, then work that all differences are averaged For the average amplitude offset at current time(3.2) under at a time, according to operating frequency formula in (1), the operating frequency value f of all users is obtained1,f2,… fk, the quantity of k expression users, averaged after removing wherein maximum and minimum valueThen maximum and minimum value will be removed Each operating frequency value and average afterwardsMake the difference, obtain difference DELTA f1,Δf2,…Δfk-2, then work that all differences are averaged For the averaged frequency offset amount at current time(saying and letter that replace with frequency)(3.3) colony attention change rate R is calculated using below equation:<mrow> <mi>R</mi> <mo>=</mo> <mfrac> <mrow> <mi>&Delta;</mi> <mover> <mi>A</mi> <mo>&OverBar;</mo> </mover> </mrow> <mi>E</mi> </mfrac> <mo>&CenterDot;</mo> <mfrac> <mrow> <mi>&Delta;</mi> <mover> <mi>f</mi> <mo>&OverBar;</mo> </mover> </mrow> <mi>F</mi> </mfrac> </mrow>Wherein, the maximum average amplitude offset in the 10min before E expression current times, F were represented before current time Maximum averaged frequency offset amount in 10min.
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