WO2014168907A1 - Système de sécurité numérique pour nageurs - Google Patents

Système de sécurité numérique pour nageurs Download PDF

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Publication number
WO2014168907A1
WO2014168907A1 PCT/US2014/033256 US2014033256W WO2014168907A1 WO 2014168907 A1 WO2014168907 A1 WO 2014168907A1 US 2014033256 W US2014033256 W US 2014033256W WO 2014168907 A1 WO2014168907 A1 WO 2014168907A1
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WO
WIPO (PCT)
Prior art keywords
swimmer
digital
safety system
radio transmitter
communications device
Prior art date
Application number
PCT/US2014/033256
Other languages
English (en)
Inventor
David M. Cutler
Eric Lee FERGUSON
Christopher J. ALLEN, Sr.
Paul E. Taylor
Thomas F. Healy
Timothy Corcoran REPP
Michael Dennis TETREAULT
Michael Andrew DAIGLE
Original Assignee
Aquatic Safety Concepts Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aquatic Safety Concepts Llc filed Critical Aquatic Safety Concepts Llc
Priority to US14/408,996 priority Critical patent/US20150194031A1/en
Publication of WO2014168907A1 publication Critical patent/WO2014168907A1/fr

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Classifications

    • 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
    • G08B21/088—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 by monitoring a device worn by the person, e.g. a bracelet attached to the swimmer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B63C9/0005—Life-saving in water by means of alarm devices for persons falling into the water, e.g. by signalling, by controlling the propulsion or manoeuvring means of the boat

Definitions

  • This invention relates to swimmer safety devices.
  • FIG 1 is a reproduction 1 10 of the cover page figure of US patent 4,549,169 "Personal Ocean Security System” (Moura). Said cover page figure is surrounded by a dotted line. The item numbers presented within said dotted line are from Moura. One or more of said item numbers will be referred to herein as appropriate.
  • Moura describes a system for providing an indication when a person 22, falls into the water. Said person wears a radio transmitter 26 which is monitored by a base station 28. In the event that said person falls into the water, the radio transmissions from the transmitter is extinguished and an appropriate alarm is generated by said base station.
  • Moura is not suitable for monitoring the safety of a skilled swimmer engaged in recreational swimming since said person is normally in the water and the radio transmissions from Moura's transmitters would always be extinguished thus providing false alarms.
  • US patent 6,157,303 Water Safety Portable Transmitter and Receiver
  • Said transmitter is illustrated in figure 1 of Bode and identified therein as item 10.
  • Said transmitter comprises a capacitance water sensor.
  • Said transmitter is worn on a person's wrist. In the event that said person falls into fresh water, the capacitive sensor is triggered and the transmitter broadcasts an alarm signal to a base station that sounds an audible alarm.
  • the device is applicable for monitoring children near a swimming pool.
  • Figure 2 shows a portion 200 of a photograph of a small child wearing the Bodie transmitter 202.
  • the width 204 required for the Bodie transmitter in combination with its symmetric mounting on a wristband 206 causes pinching 208 when worn on a small child's wrist.
  • the wristband will be uncomfortable and the child will resist wearing it.
  • Figure 3 is a reproduction 300 of figure 6 of US patent 5,408,222 "Device for Warning When a Person is Submerged Beneath Water" (Yaffe).
  • the figure is surrounded by a dotted line.
  • the item numbers presented therein are from Yaffe. One or more of said item numbers will be referred to herein as appropriate.
  • Yaffe describes a device for timing when a swimmer's head is above water.
  • the device 10 comprises a water sensitive switch that closes upon immersion and initiates a timer. After a preset period of time, the timer will transmit an alarm signal .
  • the transmitted signal may be a radio signal broadcast from an antennae 27a located at least in part on the side of a person's head.
  • the alarm signal may be picked up by a receiver 21 coupled to an inflatable device 28 that will inflate and bring the swimmer to the surface of the water.
  • the radio transmissions In order to be effective, however, the radio transmissions must be at a frequency that will travel through several centimeters of water so that they can trigger inflation when the swimmer is under water too long.
  • FIG. 4 illustrates a Digital Swimmer Safety System 400.
  • the safety system comprises a programmable radio communications device 402 and one or more personal radio transmitters 404, 406 worn either by non-swimmers 403, such as a toddler, or swimmers 405, such as an adolescence child.
  • a personal radio transmitter may be mounted on a wristband 407 for use on a non-swimmer or a headband 409 for use on a swimmer. Wristbands and headbands are collectively referred to herein as "swimbands".
  • the personal radio transmitters may be in radio communication 408, 410 with the programmable radio communications device.
  • the radio communication may be modulated carrier wave digital communication.
  • Suitable carrier frequencies are those that transmit readily through air but are attenuated at least 5 dBm by a centimeter of water. Frequencies of about 2.4 GHz are suitable.
  • a suitable digital communications protocol for said transmissions is Bluetooth® or ZigBee®.
  • Bluetooth® is a registered US trademark of Bluetooth Sig, Inc.
  • ZigBee® is a registered US trademark of ZigBee Alliance Corporation.
  • Suitable programmable radio communications devices include iPhone® cellular phones, iPad® tablet computers or other Bluetooth® or Zigbee® compatible devices. iPhone® and iPad® are registered US trademarks of Apple Inc.
  • the programmable radio communications device illustrated in figure 4 is an iPhone.
  • the programmable radio communications device may comprise a touch screen 41 1 for displaying information and receiving user input. It may additionally comprise a speaker for broadcasting sounds, a physical oscillator for transmitting vibrations or a flash for transmitting a bright light.
  • the communications device may further comprise a radio transmitter and radio receiver.
  • the communications device may comprise a microprocessor and a permanent memory wherein said permanent memory comprises computer readable instructions to cause said microprocessor to receive input from an input device (e.g. said touch screen) and transmit output to an output device (e.g. said speaker).
  • a personal radio transmitter may comprise a microprocessor, a permanent memory (e.g. firmware), a radio transmitter and a radio receiver.
  • the permanent memory may comprise computer readable instructions to cause said microprocessor to receive input from an input device (e.g. said radio receiver) and transmit output to an output device (e.g. said radio transmitter). If said permanent memory comprises firmware, said programming may be performed by physically altering said firmware to comprise said computer readable instructions.
  • the screen 41 1 of said communications device may display a current status monitor 412.
  • Said current status monitor may show a color and a number indicating the number of swimbands in radio communication with said device.
  • a green icon may be used to indicate that a swimband is a normal state.
  • a yellow icon may be used to indicate that a swimband is in a warning state.
  • a red icon may be used to indicate that a swimband is in an alert state.
  • a warning state may indicate that a monitored person should be attended to.
  • An alert state may indicate that a monitored person is in need of immediate attention. For a non-swimmer, an alert state may be triggered if the signal from a personal transmitter is lost for 3 seconds or more.
  • an alert state may be triggered if the signal from a personal transmitter is lost for 20 seconds or more.
  • a warning state for a swimmer may be triggered 10 seconds before an alert state.
  • a warning state may be triggered if said non- swimmer's signal strength slowly decreases over an extended period of time, such as 60 seconds. This may indicate that the non-swimmer wearing the personal radio transmitter is wandering off.
  • the screen of said communications device may additionally comprise one or more swimband status areas 414.
  • a swimband status area may comprise an icon 422 indicating a swimband's status (e.g. normal, warning, alert), a name 424 for a swimband (e.g. "Wahooo iSwimband 2"), a swimband signal strength indicator 426, a swimband battery indicator 428 and a link 431 to a screen for editing swimband parameters or viewing additional swimband information.
  • “Swimband signal strength” and “swimband battery” refer to the personal radio transmitter located within said swimband.
  • the screen of said communications device may additionally comprise a link 416 to add an additional swimband to be monitored.
  • the screen of said communications device may also comprise a link 436 to a monitor screen, a link 434 to a swimband manager screen, and a link 432 to a network screen. These will be explained in more detail below.
  • the screen displayed in figure 4 is an exemplary monitor screen.
  • iSwimband® and Wahooo® are registered trademarks of Aquatic Safety Concepts LLC.
  • Figure 1 displays prior art.
  • Figure 4 displays an exemplary digital swimmer safety system.
  • Figure 5A displays a top cross section of an exemplary personal radio transmitter.
  • Figure 5B displays a side cross section of the exemplary personal radio transmitter of figure 5A.
  • Figure 6A displays a front view of an exemplary headband for holding a personal radio transmitter.
  • Figure 6B displays a magnified top cross section of the exemplary headband of figure 6A.
  • Figure 6C displays a magnified side cross section of the exemplary headband of figure 6A.
  • Figure 7A displays a front view of an exemplary clip for holding the straps of a headband.
  • Figure 7B displays a top cross section of a clip in use on a headband.
  • Figure 8A displays a front view of an exemplary wristband for holding a personal radio transmitter.
  • Figure 8B is a top cross section of the wristband of figure 8A.
  • Figure 9A is a screen shot of an exemplary monitor screen displayed on a programmable radio communications device.
  • Figure 9B is a screen shot of an exemplary swimband manager screen.
  • Figure 10A is a screen shot of an exemplary confirmation screen.
  • Figure 10B is a screen shot of an exemplary swimband manager detail screen.
  • Figure 1 1 A is a screen shot of an exemplary detail screen.
  • Figure 1 1 B is a screen shot of an exemplary alert screen.
  • Figure 12A is a screen shot of an exemplary network sharing screen.
  • Figure 12B is a screen shot of an exemplary network connection screen.
  • Figure 13A is a screen shot of an exemplary network permission screen.
  • FIG. 5A shows a top cross section view of an exemplary personal radio transmitter 500.
  • Said transmitter comprises a programmable two way radio communications device 502.
  • Suitable two-way radio devices include a Broadcom® BCM20732 BLE-only System-On-Chip (SoC) and a Texas Instruments® CC2540 SoC.
  • Broadcom® is a registered trademark of Broadcom Inc.
  • Texas Instruments® is a registered trademark of Texas Instruments Inc.
  • the two-way radio device may comprise an integral radio antenna 504, such as a Planar Inverted f Antennae (PIFA).
  • PIFA Planar Inverted f Antennae
  • Said radio device may be mounted on a circuit board 506.
  • Said circuit board may comprise a partial ground plane 516.
  • a minimum width 522 of the ground plane may be provided to improve the range of said antenna.
  • a suitable width is about 3 - 4 mm.
  • a minimum spacing 518 may be provided between said radio device and said ground plane to improve the range of said antenna.
  • a suitable spacing is about 2 - 3 mm.
  • Said transmitter may comprise additional devices such as a light emitting diode
  • the accelerometer may be a three axis accelerometer. The LED may provide an indication that the transmitter is on.
  • the accelerometer may be used to turn the transmitter on or off.
  • the accelerometer may turn the transmitter on with a double tap and/or with a rotation.
  • the accelerometer may turn the transmitter off if no motion above a minimum threshold is detected for an extended period of time, such as 10 minutes.
  • An "off state" may comprise a sleep mode wherein said two way communications device maintains minimal functionality, such as receiving input from said accelerometer to turn on.
  • Said radio device may be connected to said additional devices by conductors 508 routed through said circuit board.
  • Said circuit board may be a multi-layer board, such as a four layer board.
  • the range of said radio antenna may be enhanced if said conductors are constrained to a path about 1 mm wide before they reach the ground plane.
  • Power may be provided to said transmitter by a battery 524.
  • Said battery may be a coin cell such as a Duracell® DL2032.
  • Duracell® is a registered trademark of The Gillette Company Corporation.
  • a rechargeable battery may alternatively be provided with recharging means, such as an inductively coupled charger.
  • Said personal radio transmitter may comprise a case 526.
  • Said case may be made of plastic.
  • Said case may be hermitically sealed by, for example, ultrasonic welding.
  • Figure 5B is a side cross section 510 of the personal radio transmitter of figure 5A.
  • Pins 532 are provided to elevate the circuit board so that the plane of said antenna is about the same as the plane of a surface of said battery.
  • the two-way radio device 502 may have three operation modes: sleep, connected and advertising.
  • Sleep mode for the Broadcom SoC described above consumes about 1 .5 ⁇ .
  • Connected mode consumes about 0.07843 mA.
  • Advertising mode consumes about 0.244 mA. While not wishing to be bound by this explanation, the difference in current draw between advertising mode and connected mode may be related to the relative frequency of the digital packet broadcasts from the two-way radio device. Advertising packets may be broadcast on a period of less than 0.5 ms since the radio device is seeking to make a connection.
  • Connection packets may be broadcast on a period of about 200 ms since a connection has been made. A 200 ms period for connection packets is suitable for personal water safety device.
  • the two-way radio device After a connection is made, the two-way radio device will remain in connected mode when it is above water and communicating with a programmable communications device. Said two-way device will revert to advertising mode when it is out-of-range of said communications device. Out-of-range includes being submerged in water.
  • a swimmer that swims on a routine basis may use a swimband 720 hours per year.
  • the personal radio communications device may be in connected mode for 288 hours and in advertising mode 432 hours due to said swimmer constantly placing his/her head in water. This corresponds to a total current consumption of 0.14 Amp-hours, including current used during sleep mode.
  • a CR2032 battery is rated at 0.23 Amp-hours. It is additionally desirable to have a personal radio transmitter that is thin.
  • a CR2032 meets this criteria with a thickness of about 3 mm. This leads to a battery diameter requirement of about 2 cm in order to have enough volume and hence energy capacity.
  • the combination of battery size, ground plane and circuit board size requirements can be accommodated by a case with a length 542 of about 3.8 cm, a width 544 of about 2.5 mm and a thickness 546 of about 0.5 cm.
  • Improved battery technologies and/or improved two-way device power efficiencies and antenna requirements may allow for smaller personal transmitters.
  • Figures 6A, 6B and 6C show a front view 600, magnified top cross section view 610 and magnified side cross section view 620 of an exemplary headband.
  • the headband 600 comprises straps 602 and a central pocket 606.
  • the straps comprise a series of bumps 604.
  • the central pocket has an open top 608 for receiving a personal radio transmitter therein.
  • a suitable length 636 of a headband is about 66 cm.
  • a suitable width 632 of a strap is about 1 .2 cm.
  • a suitable thickness 646 (figure 6B) of a strap is about 0.225 cm.
  • a suitable height of a bump 644 (figure 6B) is about 0.025 cm. This will give a combined strap plus bump thickness 648 of about 0.25 cm.
  • a bump may have a gradual leading slope 642 and a steep trailing slope 640.
  • a suitable angle for said leading slope is about 25 degrees with respect to the horizontal.
  • a suitable angle for said trailing slope is about 60 degrees with respect to the horizontal.
  • said slopes in combination with the clip described in figure 7A will help make the headband easy to adjust yet stable in a set position.
  • a suitable spacing 634 (figure 6A) between bumps is about 0.65 cm.
  • a personal radio transmitter 612 is shown inside the pocket 606.
  • a concave curvature 614 is shown at the back of said pocket to help the head strap conform to the curvature of a person's forehead.
  • a suitable radius of curvature is about 16.5 cm.
  • a lip 622 is shown at the top opening 608 of the pocket.
  • a suitable material of construction for said headband is a water compatible elastomer. Silicone rubber is a suitable elastomer.
  • the head strap can be permanently molded into the head band or attached to the headband by clips, Velcro® or other closures.
  • Velcro® is a registered trademark of Velcro Industries B. V.
  • the personal radio transmitter and/or battery can also be placed on the back or side of a swimmer's head, provided that the broadcasting antenna is mounted on the front of said swimmer's head. Mounting the antenna on the front of a person's head is required since the indicator of a swimmer being in distress is that his/her mouth and nose are submerged for an unsafe period of time.
  • FIG. 7A is a front view of a clip 700.
  • Said clip comprises interconnected bars 702 which form a center opening 704 and two side openings 706.
  • Said bars may have a diameter of about 0.2 cm.
  • the material of construction should be stiff. Rigid plastic is a suitable material of construction.
  • the internal length of said openings 712 is about equal to or greater than the width of the corresponding straps 602 (figure 6A) that will be placed through them.
  • An opening length of about 1 .3 cm is suitable for a strap width of about 1 .2 cm.
  • a suitable width 714 of a side chamber is about the same as the combined thickness of a strap and a bump.
  • a width of about 0.25 cm is suitable for a combined strap thickness plus bump height of 0.25 cm.
  • the width 716 of the center opening should be slightly less than twice the combined thickness of a strap and bump. A width of about 0.48 cm is suitable for a combined thickness of two straps and bumps of 0.5 cm. 10% is considered to be slightly less. The reduced width of the center opening will allow straps to be pulled through for adjustment with modest force but help lock the straps in place once sideways tension is placed on them. This is illustrated in figure 7B.
  • Figure 7B shows a top cross sectional view 720 of a clip 726 holding the straps of a headband 722.
  • the headband is wrapped around a person's head (not shown) with the pocket holding the personal radio transmitter 724 resting on said person's forehead.
  • the ends of the two straps 732, 734 are placed back-to-back and pulled 736 through the center opening of the clip.
  • the user pulls the clip up to the back of his/her head until the fit is snug. This is facilitated by the gradual slope of the leading edge of the bumps.
  • the strap exerts a sideways force 738 which, in combination with the steep slope of the trailing edge of the bumps 728, holds the clip in place.
  • the user may then thread one or more straps 734 through its corresponding outer opening in the clip.
  • the headband may be simply slid off of the user's head with the clip remaining in position, or the straps may be removed from their side openings and the clip slid back.
  • FIG 8A An exemplary wristband design 800 is illustrated in figure 8A. This is a front view. Similar to the headband, the wristband comprises straps 802 and an open top center pocket 804 for holding a personal radio transmitter. The straps may have a similar design to a corresponding headband. This will allow the use of the same clip for both a head band and a wristband provided in the same consumer package.
  • a suitable overall length 809 of the wristband is about 23 cm.
  • the dimensional requirements of the personal radio transmitter described herein make it unwieldy for the pocket to have the same orientation on a wristband as it has on a headband. It was surprisingly discovered that it if the pocket on a wristband was rotated 90 degrees (806) and shifted off center so a first side of the pocket 804 was about 1 .3 cm from the centerline 808 of the strap, that a toddler could wear the wristband without the transmitter causing pinching or other undue discomfort when the toddler flexed his/her hand about his/her wrist. See the personal transmitter 404 and wristband 407 mounted on the crawling toddler in Figure 4.
  • the wristband pocket configuration allows the same personal transmitter to be used in both a wristband designed for a toddler and a headband designed for an adolescent or adult.
  • FIG. 8B shows a side cross section 810 of the wristband of figure 8A.
  • a personal radio transmitter 812 is shown in the pocket.
  • a suitable radius of curvature is about 1 .3 cm.
  • Suitable materials of construction for the wristband include water compatible elastomers. Silicone rubber is a suitable elastomer.
  • the durometer of the elastomers used may be similar to the durometers of other aquatic devices such as goggle straps and wristbands. Alternative materials of construction such as those described for the headband may also be used.
  • FIGS 9A through 13A Exemplary modes of operation and user interfaces are illustrated in figures 9A through 13A. Said figures are screen shots of user interfaces presented on an iPhone.
  • the iPhone in these examples is serving as a programmable radio communications device. Similar screen designs and functionality may be provided on similar programmable radio communications devices that allow for foreground and background operation of apps, such as Android® devices, Window® devices and Ubuntu® devices.
  • Android® is a registered US trademark of Google Inc.
  • Windows® is a registered US trademark of Microsoft Inc.
  • Ubuntu® is a registered US trademark of Canonical Limited.
  • Figure 9A shows a monitor screen 900 that is currently monitoring swimband "iSwimband 1 " 905.
  • the collective status of the monitored swimbands is shown in the current status monitor 901 .
  • the leftmost icon 902 is green and shows that the one monitored swimband is in a normal state.
  • the center icon 903 is yellow and indicates that no monitored swimbands are in a warning state.
  • the rightmost icon 904 is red and indicates that no monitored swimband are in an alert state.
  • Provision 906 is made for the user to add a swimband to be monitored. If the user selects this option via, for example, touching it on the iPhone touchscreen, then a swimband manager screen 910 ( Figure 9B) is presented.
  • FIG. 9B illustrates a swimband manager screen.
  • the current status monitor 912 is still presented indicating that swimbands are still being monitored. There are, however, additional local swimbands that are in advertising mode that the communications device can monitor. These are indicated by labeled areas 914. If a user wishes to monitor one of these swimbands, then the user selects the band to be monitored.
  • Figure 10A shows an exemplary confirmation screen 1000 presented to a user upon selecting a swimband.
  • the user is asked to input a confirmation code 1002.
  • Said confirmation code for example, may be a 6 digit code associated with a particular personal transmitter. If the user inputs the correct code, then the programmable communications device responds to the advertising signal and establishes a connection with the corresponding swimband. This connection comprises relatively low power handshake messages transmitted back and forth from the personal transmitter to the communications device.
  • the system may be configured to require that the user input the confirmation code for the particular swimband selected.
  • the system may be configured to determine if the code input by the user corresponds to any of the advertising swimbands. If so, the system may inform the user of the name of the swimband selected.
  • Figure 10B shows a swimband manager detail page 1010 that is presented once the connection with a swimband is established.
  • the user may edit the name of the swimband 1012.
  • the user may also be presented with information 1014 about the swimband.
  • the user may be presented with an option 1016 to disconnect from a swimband. If the user disconnects from a swimband, the swimband returns to an advertising state.
  • Figure 1 1 A illustrates a swimband edit screen 1 100 that may be presented to a user.
  • the user may edit the name 1 102, type of swimmer 1 104, time period at which an alert is sounded 1 106 and time period preceding an alert when a warning should be indicated 1 108.
  • a suitable default time period for an alert for a non-swimmer is 3 seconds.
  • a suitable default time period for a swimmer is 20 seconds.
  • a user may be provided with the option to have longer or shorter time periods before an alert is sounded. Suitable warning should be provided to the user, however, if the user selects longer periods than the defaults.
  • FIG. 1 1 B shows an exemplary alert screen 1 1 10 that may be displayed in the event that a connection signal from a monitored swimband is lost by the programmable radio communications device for longer than said swimband's alert period.
  • the alert needs to be dramatic and persistent 1 1 12 since a person may be in immediate danger.
  • the alert may include one or more of a loud noise transmitted through the speakers of the communications device, a bright flashing light transmitted through a flash on said device or a vibration transmitted through a physical oscilator on said device. Notwithstanding the above, provision 1 1 14 may be provided to dismiss an alert. Foreground and background requirements
  • Many programmable radio communications devices allow a user to switch from one application (app) to another. This will allow the user to switch from a swimband app to another app provided the swimband app still has certain functionality while the user is engaged in the new app.
  • An app that a user switches from is termed to be "in the background”.
  • Different operating systems allow for different levels of functionality of apps that are in the background. At a minimum, the operating system for the communications device running a swimband app must:
  • the Apple iOS6 and iOS7 operating systems have this minimum functionality. Thus these systems will continue to monitor swimbands and provide an alert even if the user switches to another app after launching the Swimband app.
  • LAN connectivity
  • WiFi LAN local area network
  • Figure 12A presents an exemplary screen 1200 used to initiate LAN sharing of a monitored swimband's status.
  • a first user observes that his/her network sharing is off. If the user activates network sharing by sliding button 1204, for example, then screen 1210 ( Figure 12B) may be presented. This screen displays other personal radio communications devices 1212 that are connected through the same LAN and are running the appropriate swimband app. The user of the other communications device may then request connection 1300 (figure 13A) to the first user. If the first user allows said connection 1302, then the second user will see the status of the first user's monitored swimbands. Similarly, the first user may request to see the status of the second user's monitored swimbands. This provides an extra degree of redundancy of notification of alerts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)

Abstract

L'invention concerne un système de sécurité numérique pour nageurs comprenant un dispositif de radiocommunications programmable, tel qu'un téléphone intelligent, en communication avec un radio-émetteur personnel placé sur un nageur. Le dispositif de communications établit une connexion numérique avec le radio-émetteur et lance un temporisateur si le signal est perdu. Le signal peut être perdu à cause de l'immersion de l'émetteur dans l'eau. Si le temporisateur dépasse un seuil, une alerte est alors affichée. Le dispositif de communications est conçu pour continuer à surveiller le nageur en mode arrière-plan de telle sorte que l'utilisateur du dispositif peut exécuter une autre application. Le système peut être conçu de telle sorte que plusieurs nageurs peuvent être surveillés par le même dispositif de communications et des temps de seuil différents peuvent être réglés pour chaque nageur en fonction de leur aptitude à nager.
PCT/US2014/033256 2013-04-08 2014-04-08 Système de sécurité numérique pour nageurs WO2014168907A1 (fr)

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US14/408,996 US20150194031A1 (en) 2013-04-08 2014-04-08 Digital Swimmer Safety System

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US201361809477P 2013-04-08 2013-04-08
US61/809,477 2013-04-08
US201361901027P 2013-11-07 2013-11-07
US61/901,027 2013-11-07
US29472065 2013-11-08
US29/472,065 2013-11-08

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WO2016196720A1 (fr) * 2015-06-02 2016-12-08 Acr Electronics, Inc. Rls présentant une sangle de chariot de retenue pour chariot en configuration mains libres
CN106985986A (zh) * 2016-01-20 2017-07-28 扬智科技股份有限公司 漂浮系统
CN107590957A (zh) * 2017-08-23 2018-01-16 广东小天才科技有限公司 一种报警方法、装置和可穿戴设备
WO2021150845A1 (fr) * 2020-01-22 2021-07-29 SPORTS SOLUTIONS and INNOVATIONS LLC Solution discrète au vol de signal et de réduction de durée de jeu

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