CN105279901B - A kind of wearable device and its implementation for being used for drowned emergency - Google Patents

A kind of wearable device and its implementation for being used for drowned emergency Download PDF

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Publication number
CN105279901B
CN105279901B CN201510683217.1A CN201510683217A CN105279901B CN 105279901 B CN105279901 B CN 105279901B CN 201510683217 A CN201510683217 A CN 201510683217A CN 105279901 B CN105279901 B CN 105279901B
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China
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drowned
shell fragment
pedestal
wearable device
processor
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CN105279901A (en
Inventor
徐家林
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HUZHOU FENGYUAN AGRICULTURAL EQUIPMENT MANUFACTURE Co.,Ltd.
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Shanghai Feixun Data Communication Technology Co Ltd
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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/08Alarms 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
    • G08B21/084Alarms 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 by monitoring physical movement characteristics of the water

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The invention discloses a kind of wearable device and its implementation for being used for drowned emergency, including power supply, it also includes machinery drowned sensor, locating module, memory module, processor and the wireless transmitter module being connected with the power supply, and the locating module is used to position in real time and location information is stored in the memory module;The drowned sensor of machinery is used for using mechanical structure sensing hydraulic pressure, and when the hydraulic pressure of sensing is more than setting value, sends a high level to the processor;The processor is used to receive the high level and control wireless transmitter module to send the location information in the memory module, and also includes a receiving terminal, and the receiving terminal is used to receive the location information.The rate of false alarm of the invention for effectively reducing alarming drowning, and after occurring to drown, by the real-time positioning of locating module, receiving terminal energy real-time reception is to newest positional information, and which raises positioning accuracy and promptness.

Description

A kind of wearable device and its implementation for being used for drowned emergency
Technical field
The present invention relates to drowned lifesaving appliance technical field, more particularly to a kind of wearable device for being used for drowned emergency and Its implementation.
Background technology
China has up to 50,000 people every year to drown, and in these drowned accidents, it is due to rescue to have a sizable part Not in time, it is impossible to rapidly check on particular location of the drowning person at the bottom.Rescue is obtained in general drowned 8 minutes to be had Very high survival rate, so the time of rescue seems very important.But in current existing product or invention, prevent drowning Or water warning system volume is excessive, causes to carry inconvenience, can not be combined with the existing wearable device of in the market, or Easily wrong report, because these inventions all make use of the warning system that hydraulic pressure sensor or water trigger, when these designs are to drowning Environmental consideration deficiency.
The content of the invention
Easy false alarm, the technical problem of poor location in the presence of the present invention mainly solution prior art, the present invention The first purpose be to provide a kind of wearable device for being used for drowned emergency, the second object of the present invention is to provide in one kind State the implementation method of the wearable device for drowned emergency.
In order to realize the first object of the present invention, the technical scheme that it is mainly used is as follows:
A kind of wearable device for being used for drowned emergency, including power supply, it also includes the machinery being connected with the power supply Drowned sensor, locating module, memory module, processor and wireless transmitter module, the locating module are used to position in real time simultaneously Location information is stored in the memory module;The drowned sensor of machinery is used for using mechanical structure sensing hydraulic pressure, and When the hydraulic pressure of sensing is more than setting value, a high level is sent to the processor;The processor is used to receive the high electricity Put down and control wireless transmitter module to send the location information in the memory module, and also include a receiving terminal, The receiving terminal is used to receive the location information.
Further, the drowned sensor of the machinery includes the housing of upper opening, detection circuit, mechanical shell fragment and sealing Film, detection circuit, mechanical shell fragment and the sealing film are respectively positioned on the inside of the housing, the detection circuit and the place Reason device is connected, and the detection circuit includes the first pedestal and the second pedestal, is set respectively on first pedestal and the second pedestal Have the first basic point and the second basic point, the fixing end of the mechanical shell fragment is connected with first basic point, its cantilever end with it is described The position of second basic point is corresponding, the sealing film be arranged on the cantilever end of the mechanical shell fragment and second pedestal it Between, when hydraulic pressure pushes the mechanical shell fragment, and its cantilever end is in contact with second basic point, the detection circuit turn-on;When When the cantilever end of the mechanical shell fragment is separated with second basic point, the detection circuit disconnects.
Further, the housing upper is additionally provided with a cover plate, and the opening of the housing is completely covered in the cover plate, and Multiple through holes are additionally provided with the cover plate.
Further, the inside of the housing is additionally provided with multiple breath lights, and multiple breath lights are separately fixed at described The upper surface of mechanical shell fragment, the first pedestal and the second pedestal, and the position of multiple breath lights and the position of multiple through holes Put one-to-one corresponding.
Further, the locating module includes GPS locator and beacon circuit, and the beacon circuit includes being sequentially connected Crystal oscillator, frequency dividing circuit, ook modulation circuits and output unit, the ook modulation circuits include m-sequence generation circuit With sinusoidal signal generation circuit, the sinusoidal signal generation circuit is used to send sinusoidal signal to the output unit, described defeated Go out after unit receives the sinusoidal signal and send acoustic signals.
Further, the mechanical shell fragment is made using copper sheet.
In order to realize the second object of the present invention, the technical scheme that it is mainly used is as follows:
A kind of implementation method of the above-mentioned wearable device for being used for drowned emergency, it comprises the following steps:
S1, wearable device is worn on human body, its locating module is positioned in real time, and location information is stored in In memory module;
The drowned sensor sensing hydraulic pressure of S2, machinery, and when the hydraulic pressure of sensing is more than setting value, a high level is sent to place Manage device;
S3, the processor receive the high level and control wireless transmitter module to believe the positioning in the memory module Breath is sent;
S4, receiving terminal receive the location information and alarmed.
Further, the locating module includes GPS locator and beacon circuit, and the beacon circuit is used to generate 3.75 × 104HZ acoustic signals.
Further, the hydraulic pressure setting value in the step S2 is the pressure when the depth of water is 1m.
The beneficial effects of the present invention are:Hydraulic pressure is sensed by the mechanical structure of the drowned sensor of machinery, reached in hydraulic pressure To can just send high level alarm signal during setting value to processor, it effectively reduces the rate of false alarm of alarming drowning, and is sending out After raw drowned, by the real-time positioning of locating module, receiving terminal energy real-time reception to newest positional information, which raises Positioning accuracy and promptness, drowning person is set to obtain rescue much sooner.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the frame principle of the wearable device for being used for drowned emergency of the present invention;
Fig. 2 is the structural representation of the drowned sensor of machinery of the wearable device for being used for drowned emergency of the present invention;
Fig. 3 is the framework of the beacon circuit of the drowned sensor of machinery of the wearable device for being used for drowned emergency of the present invention Figure;
Fig. 4 is the method flow diagram of the implementation method of the wearable device for being used for drowned emergency of the present invention.
Embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
As shown in fig.1, the wearable device for being used for drowned emergency of the present invention, including power supply 1, it also includes and power supply 1 machinery being connected is drowned sensor 2, locating module 3, memory module 4, processor 5 and wireless transmitter module 6, locating module 3 For positioning in real time and location information being stored in memory module 4;The drowned sensor 2 of machinery is used to sense using mechanical structure Hydraulic pressure, and when the hydraulic pressure of sensing is more than setting value, a high level is sent to processor 5;Processor 5 is used to receive high level simultaneously Control wireless transmitter module 6 sends the location information in memory module 4, and also includes a receiving terminal 7, receives eventually End 7 is used to receive location information.The wearable device of the present invention can be for convenience of carrying and bracelet of small volume etc..The present invention is logical The mechanical structure of the drowned sensor 2 of machinery is crossed to sense hydraulic pressure, high level alarm signal can be just sent when hydraulic pressure reaches setting value Number to processor 5, it effectively reduces the rate of false alarm of alarming drowning, and occur it is drowned after, pass through the fixed in real time of locating module 3 Position, for the energy real-time reception of receiving terminal 7 to newest positional information, which raises positioning accuracy and promptness, obtains drowning person Obtained rescue much sooner.
As shown in fig.2, the drowned sensor 2 of machinery includes the housing 21 of upper opening, detection circuit 22, mechanical shell fragment 23 With sealing film 24, detection circuit 22, mechanical shell fragment 23 and sealing film 24 are respectively positioned on the inside of housing 21, detection circuit 22 with Processor 5 is connected, and detection circuit 22 includes the first pedestal 25 and the second pedestal 26, divides on the first pedestal 25 and the second pedestal 26 Not She You the first basic point 27 and the second basic point 28, the fixing end of mechanical shell fragment 23 is connected with the first basic point 27, its cantilever end with The position of second basic point 28 is corresponding, and sealing film 24 is arranged between the cantilever end of mechanical shell fragment 23 and the second pedestal 26, when Hydraulic pressure pushes mechanical shell fragment 23, and when its cantilever end is in contact with the second basic point 28, detection circuit 22 turns on;When mechanical shell fragment 23 When cantilever end and the second basic point 28 are separated, detection circuit 22 disconnects.
When drowned, such as the wearable device (such as:Bracelet) sink at underwater 1m, now due to corresponding hydraulic pressure pressure Compel on the mechanical shell fragment 23 of the drowned sensor 2 of machinery, turn it on detection circuit 22.It is achieved thereby that by mechanical structure come Sense hydraulic pressure, its degree of accuracy is high, reduces the phenomenon of false alarm.And in order to ensure the toughness and electric conductivity of mechanical shell fragment 23 Can, mechanical shell fragment 23 can be made from copper sheet, the specific size of copper sheet can be as needed, laggard in different hydraulic pressure conduction tests Row setting.
In the present invention, the top of housing 21 is additionally provided with a cover plate 29, and the opening of housing 21, and cover plate is completely covered in cover plate 29 Multiple through holes 210 are additionally provided with 29.When occurring drowned, water is entered from through hole 210 in housing 21, to mechanical shell fragment 23 Top is oppressed, and can so be avoided hydraulic pressure from directly impacting the drowned sensor 2 of whole machinery, be made the action of mechanical shell fragment 23 more It is accurate to add.Preferably, for reasonable utilization space and improving identification, the inside of housing 21 is additionally provided with multiple breath lights 211, Multiple breath lights 211 are separately fixed at the upper surface of mechanical shell fragment 23, the first pedestal 25 and the second pedestal 26, multiple breath lights 211 position and the position of multiple through holes 210 correspond, and the purpose so set is:On the premise of use is not influenceed, Convenient observation breath light 211, is easy to auxiliary positioning.
As shown in fig.3, locating module 3 includes GPS locator 31 and beacon circuit 32, GPS locator 31 plays routine Positioning purpose.Beacon circuit 32 includes crystal oscillator 321, frequency dividing circuit 322, the and of ook modulation circuits 323 being sequentially connected Output unit 324, ook modulation circuits include m-sequence generation circuit 3231 and sinusoidal signal generation circuit 3232, sinusoidal signal production Raw circuit 3232 is used to send sinusoidal signal to output unit 324, and output unit 324 sends sound wave letter after receiving sinusoidal signal Number, wherein, the frequency of acoustic signals is 3.75 × 104HZ, and it serves the effect of another auxiliary positioning, adds positioning side The diversity of formula.
As shown in fig.4, a kind of implementation method of the above-mentioned wearable device for being used for drowned emergency, it includes following step Suddenly:
S1, wearable device is worn on human body, its locating module 3 is positioned in real time, and location information is preserved In memory module 4;
The drowned sensor 2 of S2, machinery senses hydraulic pressure, and when the hydraulic pressure of sensing is more than setting value, sends a high level extremely Processor 5;
S3, the processor 5 receive the high level and control wireless transmitter module 6 to determine in the memory module 4 Position information is sent;
S4, receiving terminal 7 receive the location information and alarmed.
In the present invention, in order to recognize the particular location of drowning person as soon as possible, locating module includes GPS locator 31 and letter Circuit 32 is marked, the beacon circuit 32 is used for the acoustic signals for generating 3.75 × 104HZ.Perceive it is drowned after, professional rescues Helping mechanism can use special detection device to detect acoustic signals caused by beacon circuit in multiple spot, so as to more rapidly carry out Positioning.The hydraulic pressure setting value in step S2 in the present invention is the pressure when the depth of water is 1m.It can also be entered according to actual conditions Row reasonable set.
More than, be only the present invention embodiment, but protection scope of the present invention is not limited thereto, it is any without The change or replacement that creative work is expected are crossed, should be all included within the scope of the present invention.Therefore, protection of the invention Scope should be determined by the scope of protection defined in the claims.

Claims (5)

1. a kind of wearable device for being used for drowned emergency, including power supply (1), it is characterised in that:Also include and the power supply (1) Machinery drowned sensor (2), locating module (3), memory module (4), processor (5) and the wireless transmitter module (6) being connected, The locating module (3) is used to position in real time and location information is stored in the memory module (4);The machinery is drowned to be passed Sensor (2) is used for using mechanical structure sensing hydraulic pressure, and when the hydraulic pressure of sensing is more than setting value, sends a high level to described Processor (5);The processor (5) is used to receive the high level and control wireless transmitter module (6) by the memory module (4) location information in is sent, and also includes a receiving terminal (7), and the receiving terminal (7) is described fixed for receiving Position information, wherein, the drowned sensor (2) of machinery includes the housing (21), detection circuit (22), mechanical shell fragment of upper opening (23) and sealing film (24), detection circuit (22), mechanical shell fragment (23) and the sealing film (24) are respectively positioned on the housing (21) inside, the detection circuit (22) are connected with the processor (5), and the detection circuit (22) includes the first pedestal (25) the first basic point (27) and second and the second pedestal (26), are respectively equipped with first pedestal (25) and the second pedestal (26) Basic point (28), the fixing end of the mechanical shell fragment (23) are connected with first basic point (27), its cantilever end and described second The position of basic point (28) is corresponding, and the sealing film (24) is arranged on the cantilever end and described second of the mechanical shell fragment (23) Between pedestal (26), when hydraulic pressure pushes the mechanical shell fragment (23), and its cantilever end is in contact with second basic point (28), institute State detection circuit (22) conducting;It is described when the cantilever end of the mechanical shell fragment (23) is separated with second basic point (28) Circuit (22) is detected to disconnect.
2. the wearable device as claimed in claim 1 for being used for drowned emergency, it is characterised in that:Housing (21) top is also Provided with a cover plate (29), the opening of the housing (21) is completely covered in the cover plate (29), and is also set on the cover plate (29) There are multiple through holes (210).
3. the wearable device as claimed in claim 2 for being used for drowned emergency, it is characterised in that:The inside of the housing (21) Multiple breath lights (211) are additionally provided with, multiple breath lights (211) are separately fixed at the mechanical shell fragment (23), the first pedestal (25) and the second pedestal (26) upper surface, and the position of the position of multiple breath lights (211) and multiple through holes (210) Put one-to-one corresponding.
4. the wearable device as claimed in claim 1 for being used for drowned emergency, it is characterised in that:Locating module (3) bag Include GPS locator (31) and beacon circuit (32), crystal oscillator (321) that the beacon circuit (32) includes being sequentially connected, Frequency dividing circuit (322), ook modulation circuits (323) and output unit (324), the ook modulation circuits include m-sequence and produce electricity Road (3231) and sinusoidal signal generation circuit (3232), the sinusoidal signal generation circuit (3232) are used to send sinusoidal signal extremely The output unit (324), the output unit (324) send acoustic signals after receiving the sinusoidal signal.
5. the wearable device as claimed in claim 1 for being used for drowned emergency, it is characterised in that:The mechanical shell fragment (23) is adopted It is made with copper sheet.
CN201510683217.1A 2015-10-20 2015-10-20 A kind of wearable device and its implementation for being used for drowned emergency Active CN105279901B (en)

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CN201510683217.1A CN105279901B (en) 2015-10-20 2015-10-20 A kind of wearable device and its implementation for being used for drowned emergency

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CN105279901B true CN105279901B (en) 2017-11-14

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105547568A (en) * 2016-01-28 2016-05-04 惠州Tcl移动通信有限公司 Electronic device and falling-into-water detection system thereof
CN106683345A (en) * 2016-12-30 2017-05-17 佛山潮伊汇服装有限公司 Wild swimming monitoring and drowning-preventing alarm method and wearable terminal
CN106652357A (en) * 2016-12-30 2017-05-10 佛山潮伊汇服装有限公司 Wild swimming monitoring early warning method and wearable terminal
CN106530625B (en) 2017-01-06 2018-04-03 京东方科技集团股份有限公司 Alarming drowning system and drowning alarming method
CN107172858B (en) * 2017-06-16 2019-06-14 芜湖航飞科技股份有限公司 The positioning device for ship for search and rescue based on Beidou

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2234612Y (en) * 1995-08-29 1996-09-04 李育森 Pressure transducer
CN104143251A (en) * 2013-05-06 2014-11-12 董幼兰 Pressure type drowning-preventing monitor watch
CN104157097A (en) * 2014-08-13 2014-11-19 新昌县东茗乡德创机械厂 Meter of monitoring drowning
CN104881958A (en) * 2014-02-27 2015-09-02 新昌县羽林街道昱泉机械厂 Drowning warning swimming cap

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2428850B (en) * 2005-08-03 2008-02-27 Swim Tag Ltd A portable bather monitoring device and a waterside monitoring system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2234612Y (en) * 1995-08-29 1996-09-04 李育森 Pressure transducer
CN104143251A (en) * 2013-05-06 2014-11-12 董幼兰 Pressure type drowning-preventing monitor watch
CN104881958A (en) * 2014-02-27 2015-09-02 新昌县羽林街道昱泉机械厂 Drowning warning swimming cap
CN104157097A (en) * 2014-08-13 2014-11-19 新昌县东茗乡德创机械厂 Meter of monitoring drowning

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Effective date of registration: 20201211

Address after: 313028 Industrial Park, balidian Town, Huzhou City, Zhejiang Province

Patentee after: HUZHOU FENGYUAN AGRICULTURAL EQUIPMENT MANUFACTURE Co.,Ltd.

Address before: 201616 No. 3666 Sixian Road, Songjiang District, Shanghai

Patentee before: Phicomm (Shanghai) Co.,Ltd.

PE01 Entry into force of the registration of the contract for pledge of patent right
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Denomination of invention: A wearable device for drowning rescue and its implementation method

Effective date of registration: 20210630

Granted publication date: 20171114

Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Huzhou Branch

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Registration number: Y2021330000755