CN111223273A - Method, device and system for discriminating and positioning person falling into water in swimming pool - Google Patents
Method, device and system for discriminating and positioning person falling into water in swimming pool Download PDFInfo
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- CN111223273A CN111223273A CN202010072819.4A CN202010072819A CN111223273A CN 111223273 A CN111223273 A CN 111223273A CN 202010072819 A CN202010072819 A CN 202010072819A CN 111223273 A CN111223273 A CN 111223273A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/08—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/20—Movements or behaviour, e.g. gesture recognition
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/08—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water
- 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
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/008—Alarm setting and unsetting, i.e. arming or disarming of the security system
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/016—Personal emergency signalling and security systems
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- G—PHYSICS
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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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Abstract
The invention discloses a method, a device and a system for screening and positioning personnel falling into water in a swimming pool, wherein the method for screening and positioning the personnel falling into the water is implemented by at least one screening and positioning device arranged above the swimming pool, and comprises the steps of acquiring behavior posture information of the personnel falling into the water in real time; judging whether the behavior posture information of the underwater personnel belongs to dangerous behaviors of suspected drowning personnel; if so, sending a positioning and tracking signal to the suspected person falling into the water, and simultaneously sending a danger warning signal to alarm so as to rescue in time, wherein the positioning and tracking signal is a signal with highlight display.
Description
Technical Field
The invention belongs to the field of security protection, and particularly relates to a method, a device and a system for discriminating and positioning personnel falling into water in a swimming pool.
Background
According to the digital display published by the ministry of health of China, 57000 people die of drowning every year in China; the drowning death rate of China is 8.77%, wherein the drowning death rate of China is 56.58% between 0 and 14 years old, which is the first cause of death in this age group, particularly in rural areas, drowning is frequently seen in swimming pools in developed countries, and in addition, the existing swimming pools have no specific intelligent security measures, so that the management personnel can monitor the personnel in water through eyes, visual fatigue is easily caused through the monitoring of eyes, and drowning is easily caused when people falling into water are not rescued in time.
Disclosure of Invention
The embodiment of the invention aims to overcome the problems or at least partially solve or relieve the problems, and the technical scheme disclosed by the invention can timely send out an alarm and timely rescue suspected drowning people, so that the drowning risk is reduced.
In a first aspect, the invention provides a method for screening and positioning persons falling into a swimming pool, which is implemented by at least one screening and positioning device arranged above or below the swimming pool, and comprises the following steps,
acquiring behavior attitude information of personnel in water in real time;
judging whether the behavior posture information of the underwater personnel belongs to dangerous behaviors of suspected drowning personnel;
if yes, sending a positioning and tracking signal to suspected person falling into the water, and simultaneously sending a danger warning signal to alarm so that rescue can be timely carried out, wherein the positioning and tracking signal is a signal with highlight display.
Preferably, the determining whether the behavior posture information of the underwater person belongs to the dangerous behavior posture information of the suspected drowning person includes:
acquiring behavior attitude image information of personnel in water;
carrying out image recognition and analysis on the image information to obtain behavior posture information of personnel in water;
and judging whether the behavior posture information of the personnel in the water belongs to the dangerous behavior posture information of the suspected personnel in the water.
Preferably, the sending out the danger warning signal for alarming includes:
voice broadcast alarms via a speaker, and/or,
the alarm may be generated by a siren, and/or,
and sending out an alarm to a suspected drowning person to a background manager through the background system.
Preferably, after the sending of the danger warning signal for alarming, the method includes:
and when the alarm signal sent by the person suspected of falling into the water is found to be an error alarm, the receiving reset device receives a reset request sent by the reset device.
Preferably, the suspected drowning person dangerous behaviors include dangerous behaviors of different levels, and when the behavior posture information of the drowning person is judged to belong to the suspected drowning person dangerous behaviors, the suspected drowning person dangerous behaviors are classified according to preset suspected drowning person dangerous behavior levels, and different-mode alarms are performed for different levels of dangerous behaviors.
Preferably, the dangerous behaviors of the suspected person falling into the water include a first-level dangerous behavior and a second-level dangerous behavior;
when the suspected drowning person dangerous behavior is identified as a first-level dangerous behavior, alarming in a first alarming mode;
and when the suspected drowning person dangerous behavior is identified as a second-level dangerous behavior, alarming in a second alarming mode.
The first alarm mode is used for carrying out voice broadcast alarm or alarm through whistle, and the second alarm mode is used for carrying out voice broadcast and alarm through whistle simultaneously.
Preferably, the positioning and tracking signal is a light signal with color.
Preferably, when the underwater personnel have suspected dangerous behaviors, the wearable equipment worn by the underwater personnel emits colored light to show the dangerous personnel, and simultaneously emits a danger warning signal to alarm so that rescue can be carried out in time.
Compared with the prior art, the method for discriminating and positioning the person falling into the water in the swimming pool, provided by the invention, analyzes the behavior posture information of the person in the swimming pool, and sends a positioning tracking signal to the suspected person falling into the water if the person falling into the water is judged to be the suspected person falling into the water, and simultaneously sends an alarm so that rescue personnel can rescue in time.
In a second aspect, the invention provides a screening and positioning device for a person falling into a swimming pool, which comprises:
the acquiring unit is used for acquiring behavior attitude information of personnel in water in real time;
the judging unit is used for judging whether the behavior posture information of the underwater personnel belongs to dangerous behaviors of suspected drowning personnel;
and if so, the sending unit is used for sending a positioning and tracking signal to a suspected person falling into the water and sending a danger warning signal to alarm so that rescue can be timely carried out, wherein the positioning and tracking signal is a signal with highlight display.
Compared with the prior art, the beneficial effects of the device for distinguishing and positioning the person falling into the swimming pool provided by the invention are the same as the beneficial effects of at least one method for distinguishing and positioning the person falling into the swimming pool in the technical scheme, and the detailed description is omitted here.
In a third aspect, the invention provides a screening and positioning device system for a person falling into a swimming pool, the screening and positioning system comprises at least one screening and positioning device disclosed in any one of the technical schemes, and the screening and positioning devices are mutually networked for communication.
Preferably, the monitoring system further comprises a resetting device, and the resetting device is used for resetting the screening and positioning device after an alarm occurs to a lifeguard or a background manager.
Preferably, the screening and positioning system further comprises wearable equipment, the wearable equipment is worn on the swimmer and used for assisting in positioning the swimmer in a wireless communication mode, and a sound and light alarm device is started when the swimmer is judged to be a dangerous behavior of suspected drowning people.
Compared with the prior art, the beneficial effects of the discrimination and positioning system for the person falling into the swimming pool provided by the invention are the same as the beneficial effects of at least one discrimination and positioning method for the person falling into the swimming pool in the technical scheme, and the detailed description is omitted here.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for discriminating and positioning persons falling into a swimming pool according to an embodiment of the invention;
fig. 2 is a flowchart of a discrimination and positioning method for a person falling into a swimming pool according to yet another embodiment of the disclosure;
fig. 3 is a schematic structural diagram of a device for screening and positioning persons falling into a swimming pool according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a device for screening and locating persons falling into a swimming pool according to another embodiment of the invention;
fig. 5 is a schematic diagram of a system for screening and positioning persons falling into a swimming pool.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
The applicant finds that the existing swimming pool has no specific intelligent security measures, and people in water are monitored through human eyes by managers, visual fatigue is easily caused by human eye monitoring, and the technical problem that drowning is caused when people falling into water are not rescued in time easily occurs.
In order to solve the above problems, embodiments of the present invention provide a method, an apparatus, and a system for screening and positioning a drowning person in a swimming pool, where behavior and posture information of a person in the swimming pool is analyzed, and if the person is determined to be suspected to be drowning, a positioning and tracking signal is sent to the suspected drowning person, and an alarm is sent so that a rescuer can rescue the person in time.
The invention provides a screening and positioning method for a person falling into a swimming pool. The background server end at least comprises a receiving and transmitting module, a processing module, a storage module, a display module and the like; the screening and positioning device comprises an acquisition unit for acquiring behavior and posture information of personnel in water in real time; the judging unit is used for judging whether the behavior posture information of the underwater personnel belongs to dangerous behaviors of suspected drowning personnel; and if the action posture image is the same as the action posture image, the sending unit is used for sending a positioning tracking signal to a suspected person falling into the water and sending a danger warning signal to alarm so that rescue can be timely carried out, wherein the positioning tracking signal is a signal with highlight display, and the calculation capacity of the discrimination positioning device is limited, so that the acquired action posture image of the person in the water is sometimes sent to a background server to carry out image recognition and analysis.
The screening and positioning device can be set to specific number according to the size of the swimming pool.
As shown in fig. 1, the invention discloses a screening and positioning method for a person falling into a swimming pool, which is implemented by at least one screening and positioning device arranged above or below the swimming pool, and comprises the following steps:
step S01, acquiring behavior posture information of personnel in water in real time;
it should be noted that the embodiment of the present invention is mainly used in a swimming pool, and people in the swimming pool may present various dangers, so the behavior and posture information of people in water is collected in real time through the screening and positioning device installed above the swimming pool for subsequent analysis through the embodiment of the present invention.
Step S02, judging whether the behavior posture information of the underwater personnel belongs to dangerous behaviors of suspected drowning personnel;
it should be noted that, because the model constructed through a large amount of acquisition training of behavior and posture information of the underwater personnel is stored in the screening and positioning device, firstly, the behavior and posture image information of the underwater personnel needs to be acquired through the screening and positioning device; carrying out image recognition and analysis on the image information to obtain behavior posture information of personnel in water; and judging whether the behavior posture information of the personnel in the water belongs to the dangerous behavior posture information of the suspected personnel in the water.
Due to the complexity and randomness of the behavioral data acquisition environment in the swimming pool, a large amount of white noise, outliers, occlusion points, fuzzy points and the like exist in the image video acquisition process, and the noise in the data is modeled through an intelligent algorithm, so that the learning modeling of the robust self-adaptive visual features is realized.
That is to say, a large amount of data needs to be collected to perform machine learning for modeling, and then behavior and posture information of the collected personnel in water is analyzed to judge whether the personnel is suspected to fall into water or not according to model comparison.
And step S03, if yes, sending a positioning and tracking signal to a person suspected to be drowned, and simultaneously sending a danger warning signal to alarm so as to rescue in time, wherein the positioning and tracking signal is a signal with highlight display.
It should be noted that if the behavior posture information of the person in water is judged to belong to the dangerous behavior of the suspected person falling into water through image analysis, a positioning and tracking signal is sent to the suspected person falling into water through the discrimination positioning device, and once the positioning and tracking signal is sent, the suspected person falling into water is dynamically tracked all the time.
Preferably, the positioning and tracking signal is a colored light signal, and other signals are not limited herein, as long as the rescue workers can visually find the person suspected of falling into the water, which belongs to the protection scope of the present invention.
When the positioning tracking signal is generated to the suspected person falling into the water, the danger warning signal is sent to give an alarm, the alarm can enable the warning person to know that the suspected person falling into the water appears and timely carry out rescue, and when the rescue is carried out, the specific position of the suspected person falling into the water can also be known through the positioning tracking signal.
The method for sending the danger warning signal to give an alarm comprises the following steps: the alarm system has the advantages that voice broadcasting alarm is carried out through a loudspeaker, and/or alarm is carried out through whistle, and/or alarm is carried out on suspected drowning personnel sent to a background management personnel through a background system.
That is to say, when discovering the suspected personnel that fall into water at that time, can report through the speaker or report to the police through whistling, or report to the police through both simultaneously.
As an embodiment of the present invention, the suspected drowning person dangerous behaviors include dangerous behaviors of different levels, and when it is determined that behavior posture information of the person in water belongs to the suspected drowning person dangerous behaviors, the suspected drowning person dangerous behaviors are classified according to preset suspected drowning person dangerous behavior levels, and different manner alarms are performed for the dangerous behaviors of different levels.
That is to say, because the suspected person falling into water has different danger levels, the suspected person falling into water is judged to which danger level according to the model trained in advance, and meanwhile, different-level dangerous behaviors are adopted to alarm in different modes.
Preferably, the dangerous behaviors of the suspected person falling into the water include a first-level dangerous behavior and a second-level dangerous behavior;
when the suspected dangerous behaviors of the person falling into the water are identified as first-level dangerous behaviors, alarming is carried out in a first alarming mode, and the first alarming mode is a mode of carrying out voice broadcasting alarming through a loudspeaker or alarming through whistling alarming
And when the suspected dangerous behavior of the person falling into the water is identified to be a second-level dangerous behavior, alarming is carried out in a second alarming mode, and the second alarming mode is that voice broadcasting and whistle are carried out through a loudspeaker to alarm simultaneously.
As a preferred embodiment of the present invention, the dangerous behaviors of the suspected person falling into water include a first-level dangerous behavior and a second-level dangerous behavior, and then alarm by using a corresponding alarm manner according to a preset corresponding relationship between a danger level and an alarm manner.
As shown in fig. 2, the present invention further includes step S04 after the alarm is given by the danger warning signal,
step S04, when the alarm signal sent by the suspected drowning person is found to be an error alarm, receiving an alarm stopping request sent by the resetting device; and stopping sending the alarm signal to the suspected person falling into the water.
That is, since there may be a false alarm, since the alarm system is installed above or below the swimming pool, in order to stop the alarm system, the rescuer sends a stop alarm request to the discrimination positioning device through the reset device to stop the alarm signal to the person suspected of falling into the water. The reset device can adopt one of various wireless communication modes such as radio frequency, infrared and the like, and has other functions of resetting, restoring and the like.
Preferably, when the underwater personnel have suspected dangerous behaviors, the wearable equipment worn by the underwater personnel emits colored light to show the dangerous personnel, and simultaneously emits a danger warning signal to alarm so that rescue can be carried out in time.
That is, the present invention provides a double guiding of the location of the person suspected of falling into water to prevent errors, since the detection device is generally worn on the person in the swimming pool, once the wearable device detects that the wearer is dangerous, the wearable device will display the danger by the colored light on the wearable device, and the screening and positioning device will also send out a positioning tracking signal to the person suspected of falling into water, so that if one device fails, the other device will also display an indicating function to prevent the person suspected of falling into water from being missed.
Compared with the prior art, the method for discriminating and positioning the person falling into the water in the swimming pool, provided by the invention, analyzes the behavior posture information of the person in the swimming pool, and sends a positioning tracking signal to the suspected person falling into the water if the person falling into the water is judged to be the suspected person falling into the water, and simultaneously sends an alarm so that rescue personnel can rescue in time.
In a second aspect, as shown in fig. 3, the invention also provides a screening and positioning device for a person falling into a swimming pool, which includes:
the acquiring unit 01 is used for acquiring behavior and posture information of personnel in water in real time;
the judging unit 02 is used for judging whether the behavior posture information of the underwater personnel belongs to dangerous behaviors of suspected drowning personnel;
and if the signal is the signal with the highlight display, the sending unit 03 is used for sending a positioning tracking signal to a suspected person falling into the water and sending a danger warning signal to alarm so that rescue can be timely carried out.
As shown in fig. 4, the present invention further includes: the receiving unit 04 is used for receiving an alarm stopping request sent by the resetting device when the alarm signal sent by the suspected person falling into the water is found to be an error alarm;
it should be noted that the screening and locating device is disposed on the ceiling of the swimming pool or under the water, and the implementation manner is the same as that of the implementation method of the first aspect, and is not described herein again.
Compared with the prior art, the swimming pool drowning person screening and positioning device provided by the invention has the advantages that the behavior posture information of the persons in the swimming pool is analyzed, if the persons are judged to be suspected to be drowned, the positioning and tracking signals are sent to the suspected drowning persons, and meanwhile, an alarm is sent out so that rescue workers can rescue in time.
In a third aspect, as shown in fig. 5, the invention further provides a screening and positioning system for persons falling into a swimming pool, the screening and positioning system comprises at least two screening and positioning devices, and the screening and positioning devices are networked with one another for communication.
The swimming pool comprises two screening and positioning devices 11, rescue workers 13 and swimming workers 12, behavior posture information of the workers 12 in the swimming pool is analyzed, if the persons are judged to be suspected to fall into the water, positioning and tracking signals are sent to the suspected person to fall into the water, and meanwhile, an alarm is sent out so that the rescue workers can rescue in time.
The monitoring system further comprises a resetting device (controlled by the rescue personnel 13), and the resetting device is used for resetting the screening and positioning device after the rescue personnel or the background management personnel give an alarm.
The positioning system that discriminates still includes wearable equipment (wear on aquatic personnel 12 are on one's body), and the positioning system that discriminates still includes wearable equipment, and above-mentioned wearable equipment is worn and is used for carrying out assistance-localization real-time to the swimmer through wireless communication mode on one's body at above-mentioned swimmer, and is judging start the audible and visual alarm device of taking certainly when the swimmer action is the dangerous action of the suspected personnel that fall into water.
It should be noted that, because a plurality of screening positioning devices are arranged above the swimming pool, at this time, the plurality of screening positioning devices are mutually networked for communication, and can monitor the monitoring cross area, wherein one screening positioning device cannot work, and can work through other screening positioning devices.
Compared with the prior art, the swimming pool drowning person screening and positioning system provided by the invention has the advantages that the behavior posture information of the persons in the swimming pool is analyzed, if the persons are judged to be suspected to be drowned, the positioning and tracking signals are sent to the suspected drowning persons, and meanwhile, an alarm is sent out so that rescue workers can rescue in time.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (12)
1. A method for screening and positioning personnel falling into water in a swimming pool is characterized in that the method is implemented by at least one screening and positioning device arranged above or below the swimming pool and comprises the following steps,
acquiring behavior attitude information of personnel in water in real time;
judging whether the behavior posture information of the underwater personnel belongs to dangerous behaviors of suspected drowning personnel;
if yes, sending a positioning and tracking signal to suspected person falling into the water, and simultaneously sending a danger warning signal to alarm so that rescue can be timely carried out, wherein the positioning and tracking signal is a signal with highlight display.
2. The method for screening and positioning personnel falling into water according to claim 1, wherein the step of judging whether the behavior posture information of the personnel falling into water belongs to the dangerous behavior of the suspected personnel falling into water comprises the following steps:
acquiring behavior attitude image information of personnel in water;
carrying out image recognition and analysis on the image information to extract personnel behavior posture information in water;
and judging whether the behavior posture information of the personnel in the water belongs to the dangerous behavior posture information of the suspected personnel in the water.
3. The method for screening and positioning personnel falling into water according to claim 1, wherein the sending out a danger warning signal for alarming comprises:
voice broadcast alarms via a speaker, and/or,
the alarm may be generated by a siren, and/or,
and sending out an alarm to a suspected drowning person to a background manager through the background system.
4. The method for screening and positioning the personnel falling into the water according to claim 1, wherein after the alarm is given out by the danger warning signal, the method comprises the following steps:
and when the alarm signal sent by the person suspected of falling into the water is found to be an error alarm, receiving a reset request sent by a reset device.
5. The method for screening and positioning people falling into water according to claim 1, wherein the suspected dangerous behaviors falling into water include dangerous behaviors of different levels, and when the behavior posture information of the people in water is judged to belong to the suspected dangerous behaviors falling into water, the suspected dangerous behaviors falling into water are classified according to preset dangerous behavior levels of the suspected person falling into water, and different-mode alarms are performed for the different dangerous behaviors falling into water.
6. The method for screening and locating people who are drowned according to claim 5, wherein the dangerous behaviors of the people who are suspected to be drowned include a first-level dangerous behavior and a second-level dangerous behavior;
when the suspected drowning person dangerous behavior is identified as a first-level dangerous behavior, alarming in a first alarming mode;
and when the suspected drowning person dangerous behavior is identified as a second-level dangerous behavior, alarming in a second alarming mode.
The first alarm mode is used for carrying out voice broadcast alarm or alarm through whistle, and the second alarm mode is used for carrying out voice broadcast and alarm through whistle simultaneously.
7. The drowning person rescue screening method according to claim 1, wherein the positioning tracking signal is a colored light signal.
8. The drowning person rescue screening and positioning method according to claim 1, further comprising the step of emitting colored lights to show dangerous persons by wearing wearable equipment by the drowning persons when the drowning persons are in suspected dangerous behaviors, and emitting danger warning signals to alarm so that rescue can be carried out in time.
9. The utility model provides a be used for swimming pool drowning person to examine positioner, its characterized in that, the screening tracking means includes:
the acquiring unit is used for acquiring behavior attitude information of personnel in water in real time;
the judging unit is used for judging whether the behavior posture information of the underwater personnel belongs to dangerous behaviors of suspected drowning personnel;
and if so, the sending unit is used for sending a positioning and tracking signal to a suspected person falling into the water and sending a danger warning signal to alarm so that rescue can be timely carried out, wherein the positioning and tracking signal is a signal with highlight display.
10. A screening apparatus system comprising at least two screening apparatus according to claim 9 disposed at different locations, the screening apparatus in networked communication with each other.
11. The screening positioning system of claim 10, further comprising a reset device, wherein the reset device is configured to reset the screening positioning device after an alarm is generated by a lifeguard or a back-office manager.
12. The screening positioning system of claim 10, further comprising a wearable device, wherein the wearable device is worn on the swimmer for assisting in positioning the swimmer through wireless communication, and the wearable device is configured to activate an audible and visual alarm when the swimmer is determined to be dangerous to the person likely to be drowned.
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