CN102005103B - Anti-drowning warning equipment and warning method thereof - Google Patents
Anti-drowning warning equipment and warning method thereof Download PDFInfo
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- CN102005103B CN102005103B CN 201010553818 CN201010553818A CN102005103B CN 102005103 B CN102005103 B CN 102005103B CN 201010553818 CN201010553818 CN 201010553818 CN 201010553818 A CN201010553818 A CN 201010553818A CN 102005103 B CN102005103 B CN 102005103B
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Abstract
The invention discloses anti-drowning warning equipment and a warning method thereof. In the warning equipment, air flow intensity signals caused by water wave in a water area are detected by using a sensing device and converted into digital voltage signals, then water area model matching is performed by using a first microcontroller according to the digital voltage signals, whether warming signals are generated is determined according to the matching result, and the warming signals are used for indoor and outdoor audible and visual alarm through a first warning module and a second warning device of a front-end trigger device respectively; the anti-drowning warning equipment with the structure can effectively reduce the missing alarm and false alarm rate by the water area model matching of the first microcontroller and improve the safety performance, and experiments show that the safety indexes of the anti-drowning warning equipment can reach the safety indexes specified by NFP90-307 and ASTMF-2208 standards; moreover, the anti-drowning warning equipment has wide application range, and can be applied to standard swimming pools, ponds, small rivers and hot spring and environments of standard swimming pools, ponds, small rivers and hot spring under severe weather conditions.
Description
Technical field
The present invention relates to a kind of panalarm, especially relate to a kind of anti-alarming drowning equipment and alarm method thereof.。
Background technology
Along with improving constantly of people's living standard, many families begin to have pondlet in private swimming pool, private garden, river etc.Yet, private swimming pools etc. also have the personal management unlike the lido, if child or animal are accidentally fallen in swimming pool and in time do not find or rescue, the accident of drowning may occur, therefore drowned problem has become a very important safety problem.
In order effectively to solve anti-drowned problem, a variety of anti-alarming drowning equipment have at home and abroad appearred on market.The performance of anti-alarming drowning equipment most critical is the accuracy of drowned monitoring alarm, thereby to fail to report the problem such as wrong report be problem in the urgent need to address.Existing anti-alarming drowning equipment is mainly that the information such as sound, image, ripples is analyzed and processed when drowned.Occurred in France, the U.S. the anti-alarming drowning equipment of float-type that inductive probe is float as beginning in 2005, this anti-alarming drowning device structure is simple, be easy to realize, but maximum problem is that rate of false alarm is too high.Over nearly 2 years abroad developed country the anti-alarming drowning equipment of the probes such as voice recognition, sonar, ripples pneumatics has appearred using successively, although it has improved the accuracy of drowned monitoring alarm to a certain extent, but it conforms limited as can only be adapted to small-sized normal tour swimming pool, limitation is very large, is difficult to simultaneously reach NF P90-307 and the fixed safety index of ASTM F-2208 standard.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of can effectively the reduction and fails to report rate of false alarm, and conform wide anti-alarming drowning equipment and the drowned high alarm method of monitoring alarm accuracy.
the present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of anti-alarming drowning equipment, it is characterized in that comprising front end flip flop equipment and rear end warning device, described front end flip flop equipment mainly is comprised of the first housing, be provided with the first microcontroller in described the first housing, the first alarm module, radiofrequency emitting module and for detection of the sensing device of the caused air draught strength signal of ripples in the waters, described rear end warning device mainly is comprised of the second housing, be provided with the second microcontroller in described the second housing, the second alarm module and Receiver Module, described the first microcontroller respectively with described sensing device, described the first alarm module be connected radiofrequency emitting module and connect, described the second microcontroller respectively with described the second alarm module be connected Receiver Module and be connected, described radiofrequency emitting module and described Receiver Module radio communication are mutual, the caused air draught strength signal of ripples in described sensing device induction waters, and the caused air draught strength signal of conversion ripples is digital voltage signal, the transmission of digital voltage signal is given described the first microcontroller, described the first microcontroller carries out the waters Model Matching according to digital voltage signal, and produce alerting signal according to matching result, the transmission alerting signal is given described the first alarm module and described radiofrequency emitting module, described the first alarm module is reported to the police according to alerting signal, described radiofrequency emitting module transmission alerting signal is given described Receiver Module, described Receiver Module transmission alerting signal is given described the second microcontroller, described the second microcontroller is controlled described the second alarm module according to alerting signal and is reported to the police.
Be provided with for the input equipment of input switch signal on described the first housing and be used for showing the output device of the condition information of described front end flip flop equipment, described input equipment be connected output device and be connected with described the first microcontroller respectively.
Be provided with shift knob and pilot lamp on described the second housing.
described sensing device comprises the air-pressure type probe, signal amplifies processing module and A/D analog-to-digital conversion module, the caused air draught strength signal of ripples in described air-pressure type probe induction waters, and the caused air draught strength signal of conversion ripples is simulation small voltage signal, described air-pressure type probe transportation simulator small voltage signal amplifies processing module for described signal, described signal amplifies processing module and amplifies simulation small voltage signal, and the large voltage signal of simulation after the transmission amplification is given described A/D analog-to-digital conversion module, the large voltage signal of described A/D analog-to-digital conversion module converting analogue is digital voltage signal.
The below of described the first housing is provided with hollow tube, the top of described hollow tube is sealed end, described sealed end is connected with described the first housing, the bottom of described hollow tube is openend, described openend stretches in water when using, described signal amplifies processing module and described A/D analog-to-digital conversion module is arranged in described the first housing, and described air-pressure type probe is arranged in described hollow tube.
Described air-pressure type probe is arranged on the centre position of sealed end inboard of described hollow tube.
Described signal amplifies processing module and mainly is comprised of multistage differential amplifier, the input end of the described differential amplifier of the first order is connected with the output terminal of described air-pressure type probe, receive the simulation small voltage signal of the output terminal output of described air-pressure type probe, the output terminal of the described differential amplifier of afterbody is connected with the input end of described A/D analog-to-digital conversion module, and the large voltage signal of simulation after output is amplified is given described A/D analog-to-digital conversion module.
Described signal amplifies processing module and mainly is comprised of three grades of difference amplifiers.
Described A/D analog-to-digital conversion module adopts the A/D analog to digital converter of 8～16.
A kind of alarm method of anti-alarming drowning equipment is characterized in that comprising the following steps:
1. the caused air draught strength signal of ripples in sensing device Real-time Obtaining waters, and convert the caused air draught strength signal of ripples to digital voltage signal, then the transmission of digital voltage signal is given the first microcontroller, in the past data memory block of the RAM storer that the digital voltage signal of the first front 30 second time period of microcontroller storage arranges in the first microcontroller, in the instant data storage area of the RAM storer that the digital voltage signal of storing simultaneously rear 2 second time period arranges in the first microcontroller;
2. after storing the digital voltage signal of current 30 second time period in the past data memory block of RAM storer, the first microcontroller carries out the waters Model Matching according to the digital voltage signal of current 30 second time period, determine the water environment of sensing device work at present, wherein the detailed process of waters Model Matching is:
2.-1, the first microcontroller is according to the digital voltage signal of the current 30 second time period of storing in the past data memory block, the amplitude peak of ripples in the water environment of sensing device work at present and the cycle of ripples are obtained in analysis, then to the amplitude peak of the ripples of each the basic waters model in the FLASH storer that is pre-stored in the first microcontroller, the amplitude peak of the cycle of ripples and the ripples that obtain, the cycle of ripples is carried out correspondence relatively, if the difference of the amplitude peak of both ripples less than the difference in the cycle of 0.6～1.2V and both ripples less than 80～150ms, think that qualified basic waters model is the waters model of current matching, and continuation execution in step 2.-2, otherwise, execution in step 2.-3,
Wherein, the waters model comprises normal tour swimming-pool water domain model, pond water domain model, river waters model and thermal water domain model substantially;
Whether the amplitude peak of the ripples in the setting-up time section that the 2.-2, first microcontroller judgement is obtained less than 0～0.4V, if so, thinks ripples relatively placidity in the water environment of sensing device work at present, and then execution in step 2.-4; Otherwise, whether the cycle of the ripples that the first microcontroller judgement is obtained is infinitely great, if, think the irregular variation of ripples in the water environment of sensing device work at present, then execution in step 2.-4, otherwise, think that the ripples rule changes in the water environment of sensing device work at present, then execution in step 2.-4;
Wherein, the setting-up time section is 60～180ms;
2. the-3, first microcontroller carries out corresponding the comparison to the amplitude peak of the ripples of each the special waters model in the FLASH storer that is pre-stored in the first microcontroller, cycle and the amplitude peak of the ripples that obtain, the cycle of ripples of ripples, if the difference of the amplitude peak of both ripples less than the difference in the cycle of 1.5～2.5V and both ripples less than 40～220ms, think that qualified special waters model is the waters model of current matching, and continuation execution in step 2.-4, otherwise, the closed front end flip flop equipment;
Wherein, special waters model comprises normal tour swimming-pool water domain model under adverse weather condition, pond water domain model, river waters model, thermal water domain model;
2. the-4, first microcontroller determines that the water environment of sensing device work at present conforms to the waters model of current matching;
3. the first microcontroller is according to the digital voltage signal of the current 2 second time period of storing in instant data storage area, the amplitude peak of ripples in the water environment of sensing device work at present and the cycle of ripples are obtained in analysis, and to the amplitude peak of the ripples that obtain, the amplitude peak of the ripples of the waters model of the cycle of ripples and current matching, the cycle of ripples is carried out correspondence relatively, if the difference of the amplitude peak of both ripples less than the difference in the cycle of 2.5～3.5V and both ripples less than 200～1000ms, returning to step 3. continues to carry out, until 1. number of comparisons returns to execution in step after reaching 150 times, otherwise, the first microcontroller produces alerting signal, and the transmission alerting signal is given the first alarm module and radiofrequency emitting module, the first alarm module is reported to the police according to alerting signal,
4. radiofrequency emitting module transmission alerting signal is to Receiver Module, and Receiver Module transmission alerting signal is given the second microcontroller, and the second microcontroller is controlled the second alarm module according to alerting signal and reported to the police.
﹠lt, b TranNum="89" ﹠gt, ﹠lt, / b ﹠gt, compared with prior art, the invention has the advantages that and utilize sensing device to detect the caused air draught strength signal of ripples in the waters, and be converted to digital voltage signal, then utilize the first microcontroller to carry out the waters Model Matching according to digital voltage signal, and determine whether to produce alerting signal according to the result of coupling, alerting signal is carried out respectively the indoor and outdoor sound and light alarm by the first alarm module and the second alarm module, the waters Model Matching of the anti-alarming drowning equipment of this structure by the first microcontroller can effectively reduce fails to report rate of false alarm, improve security performance, can reach NF P90-307 and the fixed safety index of ASTM F-2208 standard through testing its safety index, in addition, this anti-alarming drowning equipment suitable environment is wide, applicable to normal tour swimming pool, pond, river and hot spring, and in the environment such as the normal tour swimming pool under adverse weather condition, pond, river, hot spring.
utilize the air-pressure type probe to detect the caused air draught strength signal of ripples in the waters, when ambient air pressure and air-flow generation subtle change, air-flow in the airstream compartment of air-pressure type probe also can change accordingly, thereby cause the vibration of the different amplitudes of ceramic induction sheet of air-pressure type probe, produce simulation small voltage signal, then utilize signal to amplify processing module simulation small voltage signal is amplified processing, recycling A/D analog-to-digital conversion module will be simulated large voltage signal and be converted digital voltage signal to, because probe can be sensed minimum Air Flow and air pressure variations on every side, sensitivity is very high, therefore accuracy of detection is higher, on the other hand, can distortionlessly amplify processing because signal amplifies processing module, therefore failing to report of ambient conditions be reported by mistake possibility minimum, in addition, sensing device is low in energy consumption, antijamming capability is strong, and output signal is digital signal, and the first microcontroller of being convenient to rear class is processed and calculated, thereby its usable range is very wide, goes in the anti-drowning alarm under various environment.
Description of drawings
Fig. 1 is the composition schematic diagram of anti-alarming drowning equipment of the present invention;
Fig. 2 is that air-pressure type probe, the signal of sensing device of the present invention amplifies the connection diagram between processing module and A/D analog-to-digital conversion module.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Embodiment one:
a kind of anti-alarming drowning equipment, as shown in the figure, it comprises front end flip flop equipment 1 and rear end warning device 2, front end flip flop equipment 1 mainly is comprised of the first housing (not shown), be provided with the first microcontroller 11 in the first housing, the first alarm module 12, radiofrequency emitting module 13 and for detection of the sensing device 14 of the caused air draught strength signal of ripples in the waters, rear end warning device 2 mainly is comprised of the second housing (not shown), be provided with the second microcontroller 21 in the second housing, the second alarm module 22 and Receiver Module 23, the first microcontroller 11 respectively with sensing device 14, the first alarm module 12 is connected connection with radiofrequency emitting module, the second microcontroller 21 is connected with Receiver Module with the second alarm module 22 respectively and is connected, radiofrequency emitting module 13 is mutual with Receiver Module 23 radio communications, sensing device 14 is responded to the caused air draught strength signal of ripples in the waters, and the caused air draught strength signal of conversion ripples is digital voltage signal, the transmission of digital voltage signal is given the first microcontroller 11, the first microcontroller 11 carries out the waters Model Matching according to digital voltage signal, and produce alerting signal according to matching result, the transmission alerting signal is given the first alarm module 12 and radiofrequency emitting module 13, the first alarm module 12 is reported to the police according to alerting signal, radiofrequency emitting module 13 transmission alerting signals are to Receiver Module 23, Receiver Module 23 transmission alerting signals are given the second microcontroller 21, the second microcontroller 21 is controlled the second alarm module 22 according to alerting signal and is reported to the police.
At this, generally be placed in the sides such as swimming pool due to front end flip flop equipment 1, so its first housing adopts seal casinghousing, and that rear end warning device 2 is placed in generally is indoor, so its second housing can adopt common housing; It is the control chip of MSP430FG43X that the first microcontroller 11 adopts model, it is the wireless transmitter module of MICRF113 that radiofrequency emitting module 13 adopts model, it is the control chip of PIC16F716 that the second microcontroller 21 adopts model, it is the wireless receiving module of MICRF211 that Receiver Module 23 adopts model, and the first alarm module 12 and the second alarm module 22 all adopt the warning circuit of existing maturation.
In this specific embodiment, be provided with for the input equipment 15 of input switch signal on the first housing and be used for showing the output device 16 of the condition information of front end flip flop equipment 1, input equipment 15 is connected with output device and is connected with the first microcontroller 11 respectively.Not only can realize the Push And Release of front end flip flop equipment 1 by input equipment 15, and can carry out that password arranges according to user's demand etc.
In this specific embodiment, be provided with shift knob 25 and pilot lamp 26 on the second housing, shift knob 25 is connected with pilot lamp and is connected with the second microcontroller 21 respectively, and pilot lamp 26 is used to indicate the drowned situation that occurs.
in this specific embodiment, the below of the first housing is provided with the hollow tube (not shown), the top of hollow tube is sealed end, sealed end is connected with the first housing, the bottom of hollow tube is openend, openend stretches in water when using, sensing device 14 comprises air-pressure type probe 141, signal amplifies processing module 142 and A/D analog-to-digital conversion module 143, signal amplifies processing module 142 and A/D analog-to-digital conversion module 143 is arranged in the first housing, air-pressure type probe 141 is arranged at the hollow tube that is positioned at the first housing below, air-pressure type probe 141 is responded to the caused air draught strength signal of ripples in the waters, and the caused air draught strength signal of conversion ripples is simulation small voltage signal, air-pressure type probe transportation simulator small voltage signal amplifies processing module 142 to signal, signal amplifies processing module 142 and amplifies simulation small voltage signal, and the large voltage signal of simulation after the transmission amplification is to A/D analog-to-digital conversion module 143, the A/D analog-to-digital conversion module 143 large voltage signals of converting analogue are digital voltage signal.
At this, air-pressure type probe 141 is arranged on the centre position of sealed end inboard of hollow tube, and it can detect the caused air draught strength signal of ripples in the waters more accurately like this.at this, air-pressure type probe 141 adopts the probe of the FKS-111 model that FUJI company produces, the airstream compartment of the contact air-flow that this probe is inner is little by shrinkage factor, the engineering plastics that corrosion resistivity is strong are made, the inner wall smooth of airstream compartment, can make like this air-flow that enters in airstream compartment few being affected of trying one's best, reached the inside and outside air-flow of the airstream compartment consistent good result of trying one's best, be provided with gold-plated ceramic induction sheet in airstream compartment, the cardinal principle of this probe is the air pressure change according to the probe inner space, cause the vibration of the ceramic induction sheet in probe, thereby produce different analog voltage signals, the complete waterproof anti-corrosion of the probe of this model can be applicable to the high rugged surroundings of corroding of high humility for a long time.The model that provides except employing is the FKS-111 probe, also can adopt other probes with identical function.
At this, signal amplifies processing module 142 and mainly is comprised of multistage differential amplifier, the input end of first order differential amplifier is connected with the output terminal of air-pressure type probe, receive the simulation small voltage signal of the output terminal output of air-pressure type probe, the output terminal of afterbody differential amplifier is connected with the input end of A/D analog-to-digital conversion module, and the large voltage signal of simulation after output is amplified is to the A/D analog-to-digital conversion module.At this, the connected mode between multistage differential amplifier directly adopts existing connected mode.In actual design process, design three grades of difference amplifiers and get final product, the maximum amplification of three grades of difference amplifiers can surpass 2000 times, and the enlargement factor of three grades of difference amplifiers can be regulated according to the actual requirements.At this, signal amplifies processing module also can directly adopt the existing signal amplification circuit that has than high-amplification-factor.
At this, A/D analog-to-digital conversion module 143 can adopt the A/D analog to digital converter of 8～16, if figure place is too little, design accuracy may be do not reached, if figure place is too large, computing velocity can be reduced, therefore A/D analog-to-digital conversion module 3 can adopt the A/D analog to digital converter of 10 in actual design process, utilize it to carry out analog to digital conversion, not only sampling is fast, precision is high, and low in energy consumption.
this sensing device 14 can be applicable to the sensor that is used for the identification wave on various panalarms such as anti-alarming drowning equipment of the present invention, when people or pet are fallen in water, can evoke ripples, and ripples can be gone over to the surrounding transmission, when ripples arrive this sensing device 14 hollow tube under the time, wave can compress the air in hollow tube inner sealing space, thereby inner air pressure is changed in a short time, in the airstream compartment of the air-pressure type probe 141 on centre position, hollow tube top, air pressure change and extruding can occur simultaneously also and be placed in this moment, thereby make the ceramic induction sheet vibration-generating of air-pressure type probe 141, cause the variation of the small-signal of air-pressure type probe 141 front ends, amplified processing module 142 amplification processing by signal when small-signal after, the variation of signal is very obvious, after carrying out digitized processing by A/D analog-to-digital conversion module 143 again, change information in hollow tube is transferred to first microprocessor accurately to be processed, report to the police thereby form.This sensing device 14 can go out according to the waveform recognition of signal wave be by unexpected people or pet fall into cause or caused by wind etc.
Embodiment two:
A kind of alarm method of above-mentioned anti-alarming drowning equipment, it mainly comprises the following steps:
1. the caused air draught strength signal of ripples in sensing device Real-time Obtaining waters, and convert the caused air draught strength signal of ripples to digital voltage signal, then the transmission of digital voltage signal is given the first microcontroller, in the past data memory block of the RAM storer that the digital voltage signal of the first front 30 second time period of microcontroller storage arranges in the first microcontroller, in the instant data storage area of the RAM storer that the digital voltage signal of storing simultaneously rear 2 second time period arranges in the first microcontroller.
At this, be provided with a RAM storer and a FLASH storer in the first microcontroller, the RAM storer is divided into past data memory block and instant data storage area two parts when using, past data memory block and instant data storage area all adopt the FIFO(first in first out) stacked data storehouse pattern, the past data memory block is used for the digital voltage signal of front 30 second time period of real-time storage, and instant data storage area is for the digital voltage signal of 2 second time period after real-time storage.
2. after storing the digital voltage signal of current 30 second time period in the past data memory block of RAM storer, the first microcontroller carries out the waters Model Matching according to the digital voltage signal of current 30 second time period, determine the water environment of sensing device work at present, wherein the detailed process of waters Model Matching is:
2.-1, the first microcontroller is according to the digital voltage signal of the current 30 second time period of storing in the past data memory block, the amplitude peak of ripples in the water environment of sensing device work at present and the cycle of ripples are obtained in analysis, then to the amplitude peak of the ripples of each the basic waters model in the FLASH storer that is pre-stored in the first microcontroller, the amplitude peak of the cycle of ripples and the ripples that obtain, the cycle of ripples is carried out correspondence relatively, if the difference of the amplitude peak of both ripples less than the difference in the cycle of 0.6～1.2V and both ripples less than 80～150ms, think that qualified basic waters model is the waters model of current matching, and continuation execution in step 2.-2, otherwise, execution in step 2.-3.The difference of amplitude peak of ripples that can design both in actual use procedure is eligible during less than 110ms less than the difference in the cycle of 0.8V and both ripples, in fact can determine concrete value according to actual conditions.
Wherein, the waters model comprises normal tour swimming-pool water domain model, pond water domain model, river waters model and thermal water domain model substantially; These basic waters models all form by the modeling technique modeling of adopting existing maturation.
Whether the amplitude peak of the ripples in the setting-up time section that the 2.-2, first microcontroller judgement is obtained less than 0～0.4V, if so, thinks ripples relatively placidity in the water environment of sensing device work at present, and then execution in step 2.-4; Otherwise, whether the cycle of the ripples that the first microcontroller judgement is obtained is infinitely great, if, think the irregular variation of ripples in the water environment of sensing device work at present, then execution in step 2.-4, otherwise, think that the ripples rule changes in the water environment of sensing device work at present, then execution in step 2.-4.
Wherein, the setting-up time section is 60～180ms.Can be designed in actual use procedure judge obtain the setting-up time section be the amplitude peak of the ripples in 120ms whether less than 0.2V, in fact can determine concrete value according to actual conditions.
2. the-3, first microcontroller carries out corresponding the comparison to the amplitude peak of the ripples of each the special waters model in the FLASH storer that is pre-stored in the first microcontroller, cycle and the amplitude peak of the ripples that obtain, the cycle of ripples of ripples, if the difference of the amplitude peak of both ripples less than the difference in the cycle of 1.5～2.5V and both ripples less than 40～220ms, think that qualified special waters model is the waters model of current matching, and continuation execution in step 2.-4, otherwise, the closed front end flip flop equipment.The difference of amplitude peak of ripples that can design both in actual use procedure is eligible during less than 130ms less than the difference in the cycle of 2V and both ripples, in fact can determine concrete value according to actual conditions.
Wherein, special waters model comprises normal tour swimming-pool water domain model under weather extremes (strong wind, heavy rain, typhoon, ice and snow etc.) condition, pond water domain model, river waters model, thermal water domain model; These special waters models all form by the modeling technique modeling of adopting existing maturation.
2. the-4, first microcontroller determines that the water environment of sensing device work at present conforms to the waters model of current matching.
3. the first microcontroller is according to the digital voltage signal of the current 2 second time period of storing in instant data storage area, the amplitude peak of ripples in the water environment of sensing device work at present and the cycle of ripples are obtained in analysis, and to the amplitude peak of the ripples that obtain, the amplitude peak of the ripples of the waters model of the cycle of ripples and current matching, the cycle of ripples is carried out correspondence relatively, if the difference of the amplitude peak of both ripples less than the difference in the cycle of 2.5～3.5V and both ripples less than 200～1000ms, returning to step 3. continues to carry out, until 1. number of comparisons returns to execution in step after reaching 150 times, otherwise, think and have drowned phenomenon, the first microcontroller produces alerting signal, and the transmission alerting signal is given the first alarm module and radiofrequency emitting module, the first alarm module carries out sound and light alarm according to alerting signal.The difference of amplitude peak of ripples that can design both in actual use procedure is eligible during less than 600ms less than the difference in the cycle of 3V and both ripples, in fact can determine concrete value according to actual conditions.
4. radiofrequency emitting module transmission alerting signal is to Receiver Module, and Receiver Module transmission alerting signal is given the second microcontroller, and the second microcontroller is controlled the second alarm module according to alerting signal and carried out sound and light alarm.
Claims (8)
1. anti-alarming drowning equipment, it is characterized in that comprising front end flip flop equipment and rear end warning device, described front end flip flop equipment mainly is comprised of the first housing, be provided with the first microcontroller in described the first housing, the first alarm module and radiofrequency emitting module, described rear end warning device mainly is comprised of the second housing, be provided with the second microcontroller in described the second housing, the second alarm module and Receiver Module, described the first microcontroller is connected with the sensing device for detection of the caused air draught strength signal of ripples in the waters, described the first microcontroller respectively with described the first alarm module be connected radiofrequency emitting module and be connected, described the second microcontroller respectively with described the second alarm module be connected Receiver Module and be connected, described radiofrequency emitting module and described Receiver Module radio communication are mutual, the caused air draught strength signal of ripples in described sensing device induction waters, and the caused air draught strength signal of conversion ripples is digital voltage signal, the transmission of digital voltage signal is given described the first microcontroller, described the first microcontroller carries out the waters Model Matching according to digital voltage signal, and produce alerting signal according to matching result, the transmission alerting signal is given described the first alarm module and described radiofrequency emitting module, described the first alarm module is reported to the police according to alerting signal, described radiofrequency emitting module transmission alerting signal is given described Receiver Module, described Receiver Module transmission alerting signal is given described the second microcontroller, described the second microcontroller is controlled described the second alarm module according to alerting signal and is reported to the police,
described sensing device comprises the air-pressure type probe, signal amplifies processing module and A/D analog-to-digital conversion module, the caused air draught strength signal of ripples in described air-pressure type probe induction waters, and the caused air draught strength signal of conversion ripples is simulation small voltage signal, described air-pressure type probe transportation simulator small voltage signal amplifies processing module for described signal, described signal amplifies processing module and amplifies simulation small voltage signal, and the large voltage signal of simulation after the transmission amplification is given described A/D analog-to-digital conversion module, the large voltage signal of described A/D analog-to-digital conversion module converting analogue is digital voltage signal,
The below of described the first housing is provided with hollow tube, the top of described hollow tube is sealed end, described sealed end is connected with described the first housing, the bottom of described hollow tube is openend, described openend stretches in water when using, described signal amplifies processing module and described A/D analog-to-digital conversion module is arranged in described the first housing, and described air-pressure type probe is arranged in described hollow tube.
2. a kind of anti-alarming drowning equipment according to claim 1, it is characterized in that being provided with on described the first housing for the input equipment of input switch signal and be used for showing the output device of the condition information of described front end flip flop equipment, described input equipment be connected output device and be connected with described the first microcontroller respectively.
3. a kind of anti-alarming drowning equipment according to claim 1, is characterized in that being provided with shift knob and pilot lamp on described the second housing.
4. a kind of anti-alarming drowning equipment according to claim 1 is characterized in that described air-pressure type probe is arranged on the centre position of sealed end inboard of described hollow tube.
5. a kind of anti-alarming drowning equipment according to claim 1, it is characterized in that described signal amplifies processing module and mainly is comprised of multistage differential amplifier, the input end of the described differential amplifier of the first order is connected with the output terminal of described air-pressure type probe, receive the simulation small voltage signal of the output terminal output of described air-pressure type probe, the output terminal of the described differential amplifier of afterbody is connected with the input end of described A/D analog-to-digital conversion module, and the large voltage signal of simulation after output is amplified is given described A/D analog-to-digital conversion module.
6. a kind of anti-alarming drowning equipment according to claim 5, is characterized in that described signal amplifies processing module and mainly is comprised of three grades of difference amplifiers.
7. a kind of anti-alarming drowning equipment according to claim 1, is characterized in that described A/D analog-to-digital conversion module adopts the A/D analog to digital converter of 8～16.
8. the alarm method of an anti-alarming drowning equipment claimed in claim 1 is characterized in that comprising the following steps:
1. the caused air draught strength signal of ripples in sensing device Real-time Obtaining waters, and convert the caused air draught strength signal of ripples to digital voltage signal, then the transmission of digital voltage signal is given the first microcontroller, in the past data memory block of the RAM storer that the digital voltage signal of the first front 30 second time period of microcontroller storage arranges in the first microcontroller, in the instant data storage area of the RAM storer that the digital voltage signal of storing simultaneously rear 2 second time period arranges in the first microcontroller;
2. after storing the digital voltage signal of current 30 second time period in the past data memory block of RAM storer, the first microcontroller carries out the waters Model Matching according to the digital voltage signal of current 30 second time period, determine the water environment of sensing device work at present, wherein the detailed process of waters Model Matching is:
2.-1, the first microcontroller is according to the digital voltage signal of the current 30 second time period of storing in the past data memory block, the amplitude peak of ripples in the water environment of sensing device work at present and the cycle of ripples are obtained in analysis, then to the amplitude peak of the ripples of each the basic waters model in the FLASH storer that is pre-stored in the first microcontroller, the amplitude peak of the cycle of ripples and the ripples that obtain, the cycle of ripples is carried out correspondence relatively, if the difference of the amplitude peak of both ripples less than the difference in the cycle of 0.6～1.2V and both ripples less than 80～150ms, think that qualified basic waters model is the waters model of current matching, and continuation execution in step 2.-2, otherwise, execution in step 2.-3,
Wherein, the waters model comprises normal tour swimming-pool water domain model, pond water domain model, river waters model and thermal water domain model substantially;
Whether the amplitude peak of the ripples in the setting-up time section that the 2.-2, first microcontroller judgement is obtained less than 0～0.4V, if so, thinks ripples relatively placidity in the water environment of sensing device work at present, and then execution in step 2.-4; Otherwise, whether the cycle of the ripples that the first microcontroller judgement is obtained is infinitely great, if, think the irregular variation of ripples in the water environment of sensing device work at present, then execution in step 2.-4, otherwise, think that the ripples rule changes in the water environment of sensing device work at present, then execution in step 2.-4;
Wherein, the setting-up time section is 60～180ms;
2. the-3, first microcontroller carries out corresponding the comparison to the amplitude peak of the ripples of each the special waters model in the FLASH storer that is pre-stored in the first microcontroller, cycle and the amplitude peak of the ripples that obtain, the cycle of ripples of ripples, if the difference of the amplitude peak of both ripples less than the difference in the cycle of 1.5～2.5V and both ripples less than 40～220ms, think that qualified special waters model is the waters model of current matching, and continuation execution in step 2.-4, otherwise, the closed front end flip flop equipment;
Wherein, special waters model comprises normal tour swimming-pool water domain model under adverse weather condition, pond water domain model, river waters model, thermal water domain model;
2. the-4, first microcontroller determines that the water environment of sensing device work at present conforms to the waters model of current matching;
3. the first microcontroller is according to the digital voltage signal of the current 2 second time period of storing in instant data storage area, the amplitude peak of ripples in the water environment of sensing device work at present and the cycle of ripples are obtained in analysis, and to the amplitude peak of the ripples that obtain, the amplitude peak of the ripples of the waters model of the cycle of ripples and current matching, the cycle of ripples is carried out correspondence relatively, if the difference of the amplitude peak of both ripples less than the difference in the cycle of 2.5～3.5V and both ripples less than 200～1000ms, returning to step 3. continues to carry out, until 1. number of comparisons returns to execution in step after reaching 150 times, otherwise, the first microcontroller produces alerting signal, and the transmission alerting signal is given the first alarm module and radiofrequency emitting module, the first alarm module is reported to the police according to alerting signal,
4. radiofrequency emitting module transmission alerting signal is to Receiver Module, and Receiver Module transmission alerting signal is given the second microcontroller, and the second microcontroller is controlled the second alarm module according to alerting signal and reported to the police.
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| CN105185039B (en) * | 2015-10-09 | 2017-04-05 | 安庆师范学院 | Swimming area's intelligent management system and its using method |
| CN107689140B (en) * | 2017-08-09 | 2019-10-29 | 姚菡芮 | A kind of drowned alarming method for power based on luminous swimming cap |
| CN108053617B (en) * | 2017-12-18 | 2019-11-05 | 广东小天才科技有限公司 | A kind of paddle alarm control method and wearable device based on wearable device |
| CN108053618A (en) * | 2017-12-27 | 2018-05-18 | 广东小天才科技有限公司 | A kind of method and wearable device of the alarm that based on residing water environment paddle |
| CN109285322A (en) * | 2018-09-28 | 2019-01-29 | 常州大学 | A kind of drowning alarm system and method based on displacement signal and infrared signal |
| CN109118717A (en) * | 2018-09-28 | 2019-01-01 | 常州大学 | A kind of drowning alarm system and method based on angle signal and dB signal |
| US10789826B2 (en) | 2018-10-12 | 2020-09-29 | International Business Machines Corporation | Real-time safety detection and alerting |
| CN112302674B (en) * | 2020-10-30 | 2022-08-30 | 国家电网有限公司 | Tunnel construction device with rail clamping, sliding and positioning functions |
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