CN110246306A - Underwater exercise safety monitoring system design method based on wireless signal transmission - Google Patents
Underwater exercise safety monitoring system design method based on wireless signal transmission Download PDFInfo
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- CN110246306A CN110246306A CN201910508842.0A CN201910508842A CN110246306A CN 110246306 A CN110246306 A CN 110246306A CN 201910508842 A CN201910508842 A CN 201910508842A CN 110246306 A CN110246306 A CN 110246306A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/08—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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Abstract
The invention discloses the underwater exercise safety monitoring system design methods based on wireless signal transmission, including monitoring source module, the output end of monitoring source module is electrically connected at the input terminal of monitor video image processing module, it is electrically connected between the output end of monitor video image processing module and the input terminal of data sample contrast module, the output end of data sample contrast module is electrically connected at the input terminal of wireless signal transmission module.The utility model has the advantages that the present invention by using high-resolution video camera as image-taking system, full-time comprehensive monitoring can be carried out to swimming pool.The present invention is by establishing drowned motion characteristic database, so as to accurately identify the drowned sign of whole including recessive drown.The present invention is by using wireless alarm signal Transmission system, so as to guarantee all the period of time work of whole system.
Description
Technical field
The present invention relates to the monitoring system design method fields of human motion in particular surroundings, it particularly relates to be based on
The underwater exercise safety monitoring system design method of wireless signal transmission.
Background technique
What drowning incident brought party is the disappearance of life, and bring family is the heavy losses of emotional affection, and bring venue is
The dispute of law, bring society is the permanent loss of human resources and wealth.In the newest primary report of the World Health Organization
Middle display, it is drowned to have become one of children and the most important cause of death of Young Patients at present in worldwide.According to system
Meter, the whole world have more than 370,000 people because drowned and dead every year, and among these, young and children below occupy number within 25 years old
Half, need people improve enough attention.
It is rescue prime time within hypoxic exposure 4 minutes, at this time caused by drowned after drowning incident occurs for human body
Cerebral ischemic anoxia-induced apoptosis is mostly reversible lesion.4 to 8 minutes, as can taking effective and reasonable rescue, cerebral injury still had recovery
Possibility.And behavior of once drowning is more than 8 minutes, therefore caused brain tissue impairment will be irreversible damage.Therefore to drowned
Discovering and respond rapidly in time for phenomenon, is vital two links during drowning rescue.How to improve to drowned thing
Part accurately identifies, and starts alarm mechanism rapidly, and starting effectively to rescue in time is to realize that three of above-mentioned two link are effectively arranged
It applies, this is also core of the invention technology contents.
Since Ke Dina in 1976 is in the patent " swimming pool alarm is recessed " of U. S. application, to Vision IQ company in 2001
The drowning alarm system of first set in the world " sea God " of production, then obtain Tan Kah-kee teenager invention award to the end of the year 2003 and disclose group
The drowned early warning system that the DEWS group, Nan Yang University of Science and Technology, Singapore of winning prize develops, it may be said that foreign countries are in drowning alarm system
The research of aspect is from conception, exploration, practice stage to practical, amendment stage.Comprehensive previous research achievement, report of drowning
The realization of alert system mainly has following three kinds of approach:
(1) system is monitored using sonar etc. to realize
Mainly under water or a set of sonar transmission, reception device are installed in swimming pool bottom, it goes to determine whether using detector
Barrier exists, and then using certain drowned criterion, (whether the size of such as barrier, barrier motionless time are more than certain
Threshold value etc.) determine whether to drown.The method that sonar identifies drowning person's body is substantially seen inside his body containing more
Few air, if the intrapulmonary of victim has been filled with water, obtained signal cannot be determined, in some instances it may even be possible at all without
Signal processing, and then missed alarm and rescuing machine meeting.
(2) monitoring device is put in sporter
Allow underwater exercise person when carry monitoring device, such as wrist-watch, waist-belt in real time.If sporter present position is lower than water
Lower certain depth and be more than the predetermined time, monitoring device issues warning or generates floating effect, also has part monitoring device sharp
The sound that monitoring heartbeat and breathing is gone with microphone system, measures the time interval of these sound appearing and subsidings, so that it is determined that
Whether drown (as breathing stops 20 seconds).Although this monitoring system effect is preferable, since installation, use and maintenance cost are huge
Greatly, and rate of false alarm is higher, and also inevitably brings very big inconvenience to sporter, thus fails to carry out extensively.
(3) it is realized using video surveillance
Existing drowning alarm system not detection part stealth drown characteristic signal (such as face upward in water surface head portion, limbs
It is static), and these clues are all very important the reliability of monitoring and the timely relief of drowning person.Secondly, existing system
System only relies on the disappearance of monitoring swimmer's movement to judge to drown, therefore when sporter is only to maintain standing or steps at a slow speed
Triggering alarm and then false alarm are possible to when water.Third, existing system are deeper below the water surface by camera placements
Place.Generally until body sinks to such depth, it is possible to which swimmer has been in drowned final stage, correspondingly stays
To treatment time also seldom.In addition the monitoring of simple Underwater Camera may in face of video camera by swimmer's body or
The problems such as other objects block, water quality is muddy.
Patent No. CN201820177765.6 discloses a kind of swimming pool anti-drowning monitoring system, and multiple drowned signals are arranged,
The number amount and type of drowned signal are received by judgment module judgement, it is multi-party to confirm drowned situation, it will be drowned according to confirmation result
Water signal is divided into different upper-lower hierarchies, sends corresponding alarm signal, the advice method of different grades of alarm signal and
Coping style is different, more systematically manages swimming pool, reduces rate of false alarm and still has the following problems: transmitting module in the program
Sonar transmission, reception device is often used to work with signal receiving module, the method that sonar identifies drowning person's body,
Substantially see that, if the intrapulmonary of victim has been filled with water, obtained signal is just containing how many air inside his body
It not can determine that, in some instances it may even be possible at all without signal processing, and then miss alarm and rescuing machine meeting.The patent No.
CN201820178400.5 discloses a kind of anti-drowned management system of intelligent swimming pool, is conducive to the whole management of swimming pool and excellent
Change, reduce drowned rate, still, drown signal receiving module and judgment module there are still the above drawback, be easy because water is muddy or
The other reasons of person influence judgement, the phenomenon that false alarm and misjudgment occur.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides the underwater exercise safety monitoring systems based on wireless signal transmission
Design method has the advantages of capable of accurately identifying sign drowned including whole of the recessiveness including drowned, and then solves above-mentioned back
The problems in scape technology.
(2) technical solution
To realize above-mentioned the advantages of capable of accurately identifying sign drowned including whole of the recessiveness including drowned, the present invention is used
Specific technical solution it is as follows:
Underwater exercise safety monitoring system design method based on wireless signal transmission, including monitoring source module, the prison
The output end of control source module is electrically connected at the input terminal of monitor video image processing module, the monitor video image procossing mould
It is electrically connected between the output end of block and the input terminal of data sample contrast module, the output end of the data sample contrast module
It is electrically connected at the input terminal of wireless signal transmission module.
Further, the monitoring source module includes computer, and the output end of computer turns SPI interface adaptation by USB
Device is electrically connected at the control module input terminal based on MSP430 single-chip microcontroller, the control module based on MSP430 single-chip microcontroller
Output end is electrically connected at the input terminal of the radio frequency signal transceiving module based on CC10000, the radio frequency letter based on CC10000
The input terminal of number transceiver module is electrically connected at the input terminal of alarm module.
Further, the monitor video image processing module is made of monitoring module and processing module, the monitoring mould
Block includes video monitoring module and picture control module, and the processing module includes video processing module and image processing module.
Further, the data sample module includes video contrast module and image comparison module.
Further, the wireless signal transmission module is by using the computer of wireless signal transmission to form.
Further, the control module based on MSP430 single-chip microcontroller uses USB2XXX bus adapter, supports SPI
Slave mode, using DMA data transfer mode.
Further, the CC1100 chip that the radio frequency signal transceiving module based on CC10000 uses has efficient
SPI interface.
(3) beneficial effect
Compared with prior art, the present invention provides the underwater exercise safety monitoring system designs based on wireless signal transmission
Method, have it is following the utility model has the advantages that
(1), the present invention can carry out full-time entirely by using high-resolution video camera as image-taking system to swimming pool
Directional surveillance.
(2), the present invention is drowned so as to accurately identify including recessiveness by establishing drowned motion characteristic database
The drowned sign of interior whole.
(3), the present invention is by using wireless alarm signal Transmission system, so as to guarantee all the period of time work of whole system
Make.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the entirety of the underwater exercise safety monitoring system design method disclosed by the invention based on wireless signal transmission
Flow chart；
Fig. 2 is drowned possibility discrimination model figure；
Fig. 3 is wireless signal transmission system block diagram；
Fig. 4 is that wireless alarm signal receives circuit；
Fig. 5 is the receiving end interface of transmission test signal；
Fig. 6 is the transmitting terminal interface of transmission test signal.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing, these attached drawings are that the invention discloses one of content
Point, mainly to illustrate embodiment, and the associated description of specification can be cooperated to explain the operation principles of embodiment, cooperation ginseng
Examine these contents, those of ordinary skill in the art will be understood that other possible embodiments and advantages of the present invention, in figure
Component be not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.
According to an embodiment of the invention, providing the underwater exercise safety monitoring system design side based on wireless signal transmission
Method.
Now in conjunction with the drawings and specific embodiments, the present invention is further described, as shown in figures 1 to 6, implements according to the present invention
The underwater exercise safety monitoring system design method based on wireless signal transmission of example, including monitoring source module, the monitoring source
The output end of module is electrically connected at the input terminal of monitor video image processing module, the monitor video image processing module
It is electrically connected between output end and the input terminal of data sample contrast module, the output end of the data sample contrast module is electrical
It is connected to the input terminal of wireless signal transmission module, structural principle is simple, and it is powerful, it is suitable for higher to monitoring precise requirements
Underwater exercise full-time full field monitoring safely, can be widely applied to the monitoring of various environment human motions.
In one embodiment, the monitoring source module includes computer, and the output end of computer turns SPI by USB and connects
Mouth adapter is electrically connected at the control module input terminal based on MSP430 single-chip microcontroller, the control based on MSP430 single-chip microcontroller
The output end of module is electrically connected at the input terminal of the radio frequency signal transceiving module based on CC10000, described to be based on CC10000
The input terminal of radio frequency signal transceiving module be electrically connected at the input terminal of alarm module.
In one embodiment, the monitor video image processing module is made of monitoring module and processing module, described
Monitoring module includes video monitoring module and picture control module, and the processing module includes video processing module and image procossing
The monitor video acquisition place of module, this system is swimming pool, it is contemplated that swimming pool open environment is generally daytime, even and night
Evening also has brighter light source, so this system need to only select work illumination to take the photograph in the common photosensitive type monitoring of 1~3 lux
As head.
In one embodiment, the data sample module includes video contrast module and image comparison module, data sample
This module thinks the feature that input is stored with all drowned features and may drown, and is equivalent to a database.
In one embodiment, the wireless signal transmission module is believed by using the computer of wireless signal transmission to form
Number transmission is convenient, and more rapidly.
In one embodiment, the control module based on MSP430 single-chip microcontroller uses USB2XXX bus adapter, should
Adapter inner carries pull-up resistor, supports SPI slave mode, can be written and read access, every road to 2 road spi bus equipment
Up to 5 chip selection signal outputs, and+3.3V and the output of+5V power supply are provided, using DMA data transfer mode, SPI clock frequency
Rate may be up to 50MHz.
In one embodiment, the CC1100 chip that the radio frequency signal transceiving module based on CC10000 uses, has
Efficient SPI interface, CC1100 transceiver support three kinds of different sections frequency ranges, message transmission rate to reach as high as 500kbps.Chip
Frequency synthesizer is included, external filter or RF conversion is not needed, while there is efficient SPI interface, connect work with external equipment
It is extremely convenient when making.
The invention proposes a kind of total space based on wireless signal transmission, all the period of time, comprehensive underwater exercise monitoring systems
System.It is special to further investigate physiology of the sporter in waters activity for the high-resolution video camera obtained first designed for moving image
Property, motion frequency, amplitude and velocity characteristic, drowned motion characteristic data sample library is established by big-sample data study, is based on
Sample data distribution characteristics；The target body movements data that antenna is got are compared in real time with sample data, judge to move
Person whether there is drowned possibility, and then start alarm equipment, implement effectively rescue, final to realize the real-time of underwater exercise safety
Monitoring, accurate anticipation and quick response.It handled, alarmed within the first time that drowned accident may occur for swimming place and hall,
Shorten rescue time, improves rescue success rate, prevent the generation for the accident of being drowned.
Technical solution: the underwater exercise safety monitoring system design method based on wireless camera, comprising the following steps:
By on the water, the water surface, dispose several high-resolution video cameras come the real time kinematics of comprehensive monitoring players under water
State；Then collected exercise data and drowning person's state characteristic sample set are compared, assessment movement people
Member whether have it is drowned may, once there is drowned sign, i.e. starting alarm system in confirmation, by the location information of players,
It sends to apart from nearest lifeguard, to implement quickly and effectively to rescue, prevents the generation for the event of being drowned.The monitoring system uses
Wireless camera carries out data acquisition, can effectively avoid power-off, equipment installation position is not limited by power supply, can be realized
The comprehensive monitoring covering in all the period of time full field.Drowned behavior is identified by the drowned characteristic sample set of foundation, is avoided
Subtle stealthy drowning incident occurs.Using high-speed dsp processor, the timely of data quick-processing and alarm system is realized
Response, greatly shortens rescue time, directly improves the probability of surviving of drowning person, and reduces physiological damage.The monitoring system is set
Meter is finally by effective safety guarantee task for assisting lifeguard to complete underwater exercise.
1, by the water, the water surface, disposing several high-resolution video cameras monitors the real time kinematics shape of players under water
State；
2, drowned state characteristic sample database is established；
3, exercise data collected in step 1 is compared with drowned characteristic, assesses drowned possibility；
4, human action is differentiated, confirmation has drowned sign, starts alarm system；
5, lifeguard receives alarm signal, implements rescue.
Step (1) includes:
(11) the monitor video acquisition place of this system is swimming pool, it is contemplated that swimming pool open environment is generally daytime, and
Even night also has brighter light source, so this system only need to select work illumination in the common photosensitive of 1~3 lux
Type monitoring camera；
(12) by imaging colouredness classification, monitoring camera can be divided into colour imagery shot and black and white camera, this system
It needs to carry out image segmentation and motion tracking to the sporter in swimming pool, has higher requirement to video imaging, it is therefore desirable to select
High-resolution colour imagery shot is used to acquire source as monitor video；
(13) swimming pool ambient humidity is relatively large, needs to select the camera with IP67 grades or more waterproof performance.This is
Subordination has higher requirement in the higher sacurity alarm system of timeliness, to the speed of service of each link, so needing to select
Select the monitoring camera using H.265 novel video coding techniques；
(14) lens focus of monitoring camera has important influence, the smaller then visual field of lens focus to video imaging effect
Angle is bigger, and the camera lens is more suitable to do close shot monitoring use；The more big then field angle of lens focus is smaller, and the camera lens is more suitable to do distant view prison
Control is used, and national grade standard swimming pool is 50 meters long, 21 meters wide, the C3W model camera of Haikang Wei Shi company research and development can be selected, when it makes
When with the camera lens of 2.8mm focal length, the monitoring distance of available 0~15m, and 130 ° of monitoring field angle is held up to, when
When it uses 6mm focal length lens, maximum effective monitoring distance meets distant view and the monitoring of nearly jin already close to 40m；
(15) when determining camera layout, need to guarantee that the monitoring range of camera can cover swimming pool entire area, simultaneously
It must assure that every host computer can be stablized when carrying out image analysis, effectively run, be unable to generating program collapse or long
Time Caton, in order to avoid omit or postpone to issue rescue alarms.National grade standard swimming pool is 50 meters long, 21 meters wide, water surface elevation distance
General 8~12 meters of indoor top.Distance of the camera installation site apart from pool water surface should be at 10 meters or so, therefore can examine
Consider the camera lens for selecting 4mm focal length and 6mm focal length.When shooting height is 10 meters or so, the shooting of the video camera of 4mm focal length lens
Area is the rectangle of 16m × 12m, and 6mm focal length lens are then 11m × 8.3m.
Referring to Fig. 2, as the underwater exercise safety monitoring system design method in the present invention based on wireless signal transmission
A kind of preferred embodiment: step (2) include (wherein, A event represent horizontal velocity is lower, B event represent trunk upright degree it is higher,
It is longer that C event represents that area change rate is higher, D event represents Immersion time):
(21) this system proposes that four kinematic parameter indexs are produced drowned in conjunction with the logicality of this four parameter indexes
Behavior evaluation judgment module, four motion characteristic parameter indexes are as follows: the movement of time duration, horizontal direction in body immersion water
Time duration when speed, the area of body region profile and higher body erect degree；
(22) setting of the time duration in body immersion water, it is contemplated that the swimmer's swimming skills having are higher, can be in water
It swims underwater the long period, so this kind of body is totally submerged in water and horizontal velocity is not less than the swimmer of some threshold value,
This time duration threshold value can be set to 50s, and body is totally submerged, and at the same time being maintained at lower moves horizontally speed
The swimmer of degree, this duration threshold value are then set as 20s；
(23) when general human body occurs drowned, it is contemplated that unconscious stroke and the promotion of ripples, body is in level side
Upward speed is no more than 1.5m/min, i.e. move distance is no more than 0.5 meter in the 20 second time, therefore system defines position in 20 seconds
Moving swimmer of the distance no more than 0.5 meter is low speed swimmer；
(24) when human body occurs drowned, since torso portion can be at upright state, and trick can unconsciously do stroke, climb
The movement climbed, result that this movement generates is: swimmer's body contour area is smaller and the swimmer in a short time
The area of body region profile can occur to change faster.Therefore, the size of human body contour outline area and one is in fix time
Amplitude of variation can equally be used as detection parameters.
(25) trunk part is kept upright and is existed only in two kinds of situations in swimming pool, i.e., normal upright and row
Walk state and abnormal drowned state.And rescue time limit when in view of drowning, the threshold value of this time duration are generally also set
It is set to 20 seconds.When the external elliptical long axis of swimmer's body contour and the ratio of short axle are less than 1.5, then it is assumed that swimmer's body
The upright degree of body is higher.
One kind as the underwater exercise safety monitoring system design method in the present invention based on wireless signal transmission is preferably
Scheme: step (3) includes:
(31) it the state judgement in body immersion water: can be carried out by contrast and the saturation degree height of human region
Whether human body is totally submerged judgement in water.Saturation degree S can be extracted by RGB2HSV algorithm, and contrast V then can be with
It is obtained by formula 3.1, if target area pixel set is f (x, y), is then had
WhereinFor the average value of pixel intensity.
(32) movement velocity in horizontal direction calculates: the minimum for seeking human body contour outline using minboundrect function is outer
Rectangle is connect, and indicates position of human body using its central point.After the centroid position for obtaining human body, human body is indicated by mass center,
And the displacement of the mass center between a few frames is calculated, human motion speed can be calculated.If t moment centroid position is
(xt,yt), the later position of n frame is (xt+n,yt+n), then have:
vt+n/2=[(xt+n-xt)2+(yt+n-yt)2]1/2 (2)
(33) calculating of the area and change rate of body region profile: using regionprops function for seeking target
The area in region, it is desirable that when taking certain human body image-region area R, can first establish the portrait area minimum circumscribed rectangle and carry out two
Value processing, portrait area gray value is 1 at this time, then calculates pixel counts by formula (3), to obtain area.
(34) the higher state judgement of body erect degree
When human body moves in swimming pool, whether normal swimming state or standing state, and or drowned state, it is minimum
External elliptical manner is all the fit approach for fitting well on human region profile.Let R be human body image region, Zone R domain all pixels
Sum is N, then has (x, y) ∈ R, then elliptical mass center is (xc,yc), whereinIt is ellipse
Round (p, q) rank center away from spindle angular θ are as follows:
μp,q=∑ ∑ (x-xc)p(y-yc)q (4)
The then elliptical maximum rotation inertia and minimum rotation inertia are as follows:
Imax=∑ ∑ [(y-yc)sinθ-(x-xc)cosθ]2
Imin=∑ ∑ [(y-yc)cosθ-(x-xc)sinθ]2 (6)
Then transverse and the ratio of short axle can be expressed asIn the swimming of human normal, due to body with
Horizontal plane is in less parallel state, which can be relatively large.And people plants oneself in water, normal walking and generation are drowned
When, the ratio is then smaller, thinks that swimmer's body erect degree is higher when less than 1.5.
One kind as the underwater exercise safety monitoring system design method in the present invention based on wireless signal transmission is preferably
Scheme: step (4) includes:
(41) monitoring of human body contour outline: by the background model pre-established, by each frame image all with background model
Difference Calculation is carried out, to extract foreground moving region.Firstly, choosing the suitable successive frame figure for being free of foreground moving object
As being used as background modeling material, counts all pixels of each frame image and modeled, the background model of acquisition is denoted as B (x, y).
Then, the image for remembering t moment is F (x, y, t), and presets a threshold value T, by the way that image and background model are carried out difference meter
It calculates, can be obtained difference result D (x, y, t), complete the judgement to foreground moving region and background area in current frame image；
(42) segmentation of human body image: whole image is first carried out to the normalized of color and gamma value, is weakened with this
The influence of illumination factor reduces image shade and illumination variation.Second, using each in an one-dimensional discrete differential calculation image
The gradient value of pixel horizontal coordinate and vertical coordinate direction.Third is passed through by the gradient of pixel each in cell factory
The ballot of weighting, constructs direction histogram.4th, the normalization of gradient intensity is carried out, to further decrease illumination, shade
Influence, then cell factory is combined into bigger section.Finally, being carried out with the SVM classifier by human body image training
The categorised decision of optimal hyperlane detects whether contained human figure in altimetric image with this；
(43) corresponding human mould the tracking of human motion form: is set up to each human body contour outline detected
The body of type, people can be described by multiple the simplified elliptic hypothesis with artis, complete the preliminary foundation to organization of human body model
After, then it needs the picture by largely describing the various action behaviors of human body to be modeled and trained, finally establishes human mould
Type library, by the key frame model comprising all human body behavior acts in this model library.Human figure is being carried out to present frame
When tracking, human figure need to only be modeled, then search corresponding key frame in model library and be matched, after matching
The i.e. preliminary tracking completed to the current human body.
Referring to Fig. 3, as the underwater exercise safety monitoring system design method in the present invention based on wireless signal transmission
A kind of preferred embodiment: step (5) includes:
(51) wireless alarm signal Transmission system is made of two modules, is single chip control module and less radio-frequency respectively
Signal transmitting and receiving module, wherein single chip control module is mainly made of MSP430F149 single-chip microcontroller and its control circuit, is wirelessly penetrated
Frequency signal transmitting and receiving module is mainly made of radio transmitting and receiving chip CC1100 and its transmission circuit；
(52) when computer generates rescue alarm signal, which, which passes through USB first and turn SPI interface adapter, is conveyed to
Based on the control module of MSP430 single-chip microcontroller, under the control of single-chip microcontroller, the radio frequency based on CC1100 that is connected with single-chip microcontroller
Signal transmitting and receiving module will launch rescue alarm signal, and activate corresponding warning circuit by data acquisition, finally
Realize rescue alarm.
(53) radio frequency signal transceiving module at rescue personnel can receive rescue alarm signal lifeguard and incite somebody to action
Distress signal issues commander in chief's system, while being lauched implementation rescue.
Calculation method of the invention, advantage can be by with the further explanations of next emulation experiment.
1, simulated conditions
As shown in Figure 4, the USB2XXX bus adaption that the suggestion of this system control module uses Tu Mosi company in Chongqing to research and develop
Device, the adapter inner carry pull-up resistor, support SPI slave mode, can be written and read access to 2 road spi bus equipment,
The up to 5 chip selection signal outputs of every road, and+3.3V and the output of+5V power supply are provided.And adapter USB2.0 interface end is transmitted
Speed reaches as high as 482Mbps, and using DMA data transfer mode, SPI clock frequency may be up to 50MHz.In addition to this, this is suitable
Orchestration provides fatware set, and very big convenience is brought to practical operation.Single-chip microcontroller used in this system control module
MSP430F149.When system control module works normally, MSP430 single-chip microcontroller and CC1100 radio frequency chip need 3.3V power supply
Voltage, it is therefore desirable to design the conversion circuit of a supply voltage.In view of extremely widespread, the institute of use of current 5V power supply
With this system select be SEMTECH company research and development power voltage step down device EZ5Z3, the 5V power supply of input can be directly depressured by it
For 3.0V or 3.3V.Compared to low-dropout regulator part, the circuit section save space and without output capacitance.
The system carries out radio frequency signal transmitting-receiving using CC1100 chip.CC1100 is a kind of low-power, multifrequency
The monolithic UHF RF transceiver of section, transceiver, is typically used to low-power telemetry, unlimited alarm security system and nothing
Line sensor network etc..CC1100 transceiver supports three kinds of different sections frequency ranges, message transmission rate to reach as high as 500kbps.
Chip includes frequency synthesizer, does not need external filter or RF conversion, while having efficient SPI interface, connects with external equipment
It connects extremely convenient when work.
Working principle:
Simulation result
Transmission test signal transmitting terminal interface as shown in figure 5, transmission test signal transmitting terminal interface as shown in fig. 6,
In conclusion relatively accurately alarm signal can be received in time by using method of the invention, to transport in water
Dynamic safety monitoring provides technical foundation.
The method of the present invention can use the safety monitoring of underwater exercise, moreover it can be used to the safety prison moved under other particular surroundings
It surveys, there is good application value.
Simulation result shows: the present invention not only can be with the total movement personnel in accurate measurements swimming pool, and identification exists rapidly
The sample of drowned possibility, additionally it is possible to start alarm system in real time, implement effectively rescue in time, drowned phenomenon is greatly lowered and makes
At life and property loss, thoroughly prevent the event of being drowned, the whole safeguard protection for improving swimming pool is horizontal.
The present invention is suitable for that the full-time full field monitoring safely of the monitoring higher underwater exercise of precise requirements can be widely applied
In the monitoring of various environment human motions.
In the present invention unless specifically defined or limited otherwise, term " installation ", " setting ", " connection ", " fixation ",
Terms such as " being screwed on " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be with
It is mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside a element, unless otherwise restricted clearly, for the common of this field
For technical staff, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. the underwater exercise safety monitoring system design method based on wireless signal transmission, which is characterized in that including monitoring source mould
The output end of block, the monitoring source module is electrically connected at the input terminal of monitor video image processing module, the monitor video
It is electrically connected between the output end of image processing module and the input terminal of data sample contrast module, the data sample compares mould
The output end of block is electrically connected at the input terminal of wireless signal transmission module.
2. the underwater exercise safety monitoring system design method according to claim 1 based on wireless signal transmission, special
Sign is that the monitoring source module includes computer, and the output end of computer turns SPI interface adapter by USB and is electrically connected
It is electrical in the output end of the control module input terminal based on MSP430 single-chip microcontroller, the control module based on MSP430 single-chip microcontroller
It is connected to the input terminal of the radio frequency signal transceiving module based on CC10000, the radio frequency signal transceiving module based on CC10000
Input terminal be electrically connected at the input terminal of alarm module.
3. the underwater exercise safety monitoring system design method according to claim 1 based on wireless signal transmission, special
Sign is that the monitor video image processing module is made of monitoring module and processing module, and the monitoring module includes video
Monitoring module and picture control module, the processing module include video processing module and image processing module.
4. the underwater exercise safety monitoring system design method according to claim 1 based on wireless signal transmission, special
Sign is that the data sample module includes video contrast module and image comparison module.
5. the underwater exercise safety monitoring system design method according to claim 1 based on wireless signal transmission, special
Sign is that the wireless signal transmission module is by using the computer of wireless signal transmission to form.
6. the underwater exercise safety monitoring system design method according to claim 2 based on wireless signal transmission, special
Sign is that the control module based on MSP430 single-chip microcontroller uses USB2XXX bus adapter, supports SPI slave mode,
Using DMA data transfer mode.
7. the underwater exercise safety monitoring system design method according to claim 2 based on wireless signal transmission, special
Sign is that the CC1100 chip that the radio frequency signal transceiving module based on CC10000 uses has efficient SPI interface.
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Application publication date: 20190917 |