CN215310088U

CN215310088U - Swimming cap for safety monitoring of swimming pool

Info

Publication number: CN215310088U
Application number: CN202023210962.XU
Authority: CN
Inventors: 帅江海; 葛中芹; 张瀚宇; 庞凯风
Original assignee: Nanjing University
Current assignee: Nanjing University
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-12-28
Anticipated expiration: 2030-12-28

Abstract

A swimming cap for safety monitoring of a swimming pool comprises a swimming cap body, wherein a water pressure sensor, a positioning module, a Wifi module and an embedded microcontroller are arranged on the swimming cap body, and the water pressure sensor, the positioning module and the Wifi module are all connected to the embedded microcontroller; the swimmer needs to wear the swimming cap, the water pressure sensor is used for detecting whether the head of the swimmer is under the water surface or giving the position under the water surface, and if the head of the swimmer is under the water surface, the judgment information is transmitted into the embedded microcontroller; the positioning module realizes real-time positioning and transmits coordinate information of a swimmer in the swimming pool into the embedded microcontroller; the embedded microcontroller transmits the received information to a PC end or a server end through a Wifi module.

Description

Swimming cap for safety monitoring of swimming pool

Technical Field

The utility model relates to the technical field of safety prevention and control, in particular to a safety monitoring system and a swimming cap for a (child) swimming pool.

Background

With the continuous economic rapid growth of the 21 st century, people pay more and more attention to the comprehensive development of the mind and body of children, and more parents choose to carry the children to do swimming exercises because the swimming benefits are more, such as making the children more clever, improving the sleeping quality, enhancing the cardio-pulmonary function, helping the children grow tall and tall, helping the digestion and the like. However, the risk of swimming cannot be completely avoided, as the swimming pool has too many children, the life preservers cannot pay attention to the swimming state of each child, and if the children are in danger of drowning, even if a plurality of life preservers cannot find the accident and prevent the accident situation at the first time. Even if a plurality of life-saving personnel still have the time of being careless to observe.

The utility model designs a safety monitoring swimming cap of a child swimming pool, which monitors the swimming of the child in real time, positions the child in the swimming pool and judges whether the child is underwater or not, and the utility model method has the same application of the inventor; when a child is judged to be drowned, the head of the child is above a certain time (for example, 8-20 seconds, different criteria can be designed at different age stages) below the water surface and the posture of the child is judged to be drowned, the system quickly responds to send an alarm to the life-saving person, and the coordinate information of the child with the drowned risk is marked under a coordinate system of the swimming pool, so that the life-saving person can find the drowned child to perform key observation and rescue more quickly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a safety monitoring system for a (child) swimming pool and a swimming cap, in particular to a swimming cap. When can judging the swimmer whether have drowned risk (pressure sensor immerses in the pond), when the swimmer had drowned risk, the system will send the alarm for life saving person's cell-phone app to cooperation server end or PC end obtain drowned children's coordinate information, so that life saving person carries out the key observation and in time finds drowned children and rescue. The present invention can also be used to safely monitor all pools. And the safety personnel is assisted to guarantee the safety of the swimmer.

The technical scheme of the utility model is that the swimming pool safety monitoring swimming cap body comprises a swimming cap body, a water pressure detector, a positioning module, a Wifi module and an embedded microcontroller; the water pressure detector, the positioning module and the Wifi module are all electrically connected with the embedded microcontroller; the water pressure detector, the positioning module, the Wifi module and the embedded microcontroller are integrated into a sealing block and fixed with the swimming cap body; water pressure detector and swimming cap body of location: the swimming cap body is provided with a water pressure sensor, a positioning module, a water pressure sensor, a positioning module and a Wifi module which are all connected to the embedded microcontroller; the swimmer needs to wear the swimming cap, the water pressure sensor is used for detecting whether the head of the swimmer is under the water surface or giving the position under the water surface, and if the head of the swimmer is under the water surface, the judgment information is transmitted into the embedded microcontroller; the positioning module realizes real-time positioning and transmits coordinate information of a swimmer in the swimming pool into the embedded microcontroller; the embedded microcontroller transmits the received information to a PC (personal computer) end or a server end through a Wifi (wireless fidelity) module; high-definition panoramic camera: the realization is to the panorama control in the swimming pool, and the picture of will shooing is spread into PC end.

The PC end establishes a two-dimensional coordinate system for the swimming pool, and counts the number of swimmers in the swimming pool in real time according to the signals given by the swimming cap or the image signals; the number and time of each swimmer head under the water surface are counted and judged through the water pressure sensor, and when the number and time of a certain swimmer head under the water surface exceed a threshold time, the PC end gives an alarm to the mobile phone app of the lifesaving personnel through the Wifi module.

The system comprises a swimming cap with water pressure detection and (GPS, Beidou and the like) positioning, a high-definition panoramic camera, a PC end or server end, a display and a mobile phone app of a lifesaving person; swimming cap with water pressure detection and (GPS) positioning: the swimming cap is provided with a water pressure sensor, a GPS positioning module, a Wifi module and an embedded microcontroller, and the water pressure sensor, the GPS positioning module and the Wifi module are connected to the embedded microcontroller; the water pressure sensor is used for detecting whether the head of the swimmer is under the water surface or giving the position under the water surface, and if the head of the swimmer is under the water surface, judging information is transmitted into the embedded microcontroller; the positioning module (such as a GPS module) realizes real-time positioning and transmits the coordinate information of the swimmer in the swimming pool into the embedded microcontroller; the embedded microcontroller transmits the received information to a PC (personal computer) end (or a server end) through a Wifi module; the swimmer must wear the swimming cap to swim.

Be equipped with high definition panorama camera in addition: panoramic monitoring in the swimming pool is realized, and shot pictures are transmitted into a PC (personal computer) end; PC (analysis of the captured images by software at regular intervals): establishing a two-dimensional coordinate system for the swimming pool, and counting the number of swimmers in the swimming pool in real time according to the swimming cap signal or the image signal; counting and judging the number and time of each swimmer head under the water surface through a water pressure sensor, and when the number and time of a certain swimmer head under the water surface exceed a threshold time, the PC end gives an alarm to the mobile phone app of the lifesaving personnel through a Wifi module;

determining the position coordinate of each swimmer from the coordinate information transmitted from the swimming cap, marking the coordinate of each swimmer as green, displaying the green coordinate on a coordinate system and updating the green coordinate in real time; the judgment information of the swimmer above and below the water surface is transmitted by the swimming cap, if the swimmer is below the water surface, the coordinate mark of the swimmer is yellow (representing that the swimmer has a drowning risk and needs to judge the swimming posture), and if the swimmer is above the water surface, the swimmer is judged to be safe.

Further, gesture recognition and judgment are carried out on a swimmer with a possible drowning risk through a convolutional neural network (LeNet-5), if the swimmer is detected to be under the water surface within a certain time (8-20 seconds and different criteria are set at different age stages), and the swimming gesture is judged to be the drowning risk, the coordinate of the swimmer is marked to be red, and the position coordinate of the swimmer in the swimming pool and the result of judging whether the drowning risk exists are transmitted to a mobile phone app of a rescuer.

Mobile phone app of the rescuer: and receiving the swimming pool coordinate system, the real-time coordinate of each swimmer and the real-time number of swimmers in the swimming pool obtained by processing from the PC end, and displaying the coordinates and the real-time number of swimmers in the swimming pool on a mobile phone screen. The coordinate of the swimmer in normal swimming is green, and the coordinate of the swimmer with drowning risk is marked as red. And when the red coordinate appears, the mobile phone sends out vibration and gives an alarm. The swimming cap is a swimming pool standard, so the swimming cap has great practical value.

Has the advantages that: the utility model provides a drowning risk monitoring and alarming system which is mainly applied to a child swimming pool (also can be used for other swimming pools) and used for the swimming of children, can judge whether the swimmer has the risk of drowning (the pressure sensor is immersed in the pool), when the swimmer has the risk of drowning, the system sends an alarm to the mobile phone app of the lifesaving personnel, and transmits the coordinate information of the drowned children, when the children or other swimmers are judged to have the drowning danger, the main criterion is that the head is under water or the face is under the water for more than ten seconds (such as 8-20 seconds, different criteria can be designed at different age stages) and the posture is judged to have drowning risk, the system quickly responds to send out an alarm to the life-saving personnel, and the coordinate information of the children with drowning risks is marked under a swimming pool coordinate system, so that the lifesaving personnel can find the drowned children more quickly to carry out key observation and rescue. Especially, the judgment of the human head under water can be more accurate.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a swimming cap structure:

fig. 3 is a flowchart of swimmer swim gesture recognition determination by the convolutional neural network.

Detailed Description

(I) monitoring alarm system of swimming cap:

the GPS and the pressure sensor on the swimming cap transmit coordinate information and judgment information of the head above and below the water surface into the PC end, the PC end marks the swimmer with the head above the water surface as green, and the swimmer with the head below the water surface as yellow. Then, the images collected by the high-definition panoramic camera are matched with swimmers marked as yellow, the swimmers are tracked, shot (one image is collected every second in a specific time) and divided, if the head is under the water surface and the posture of the head is judged to have drowning risk, the coordinates of the swimmers are marked as red, the PC end sends alarm information to the application program end, and if the head is not under the water surface and the posture of the swimmers is judged to have drowning risk, the PC end marks the swimmers as green. GPS and pressure sensor WIFI on the swimming cap 4 and microprocessor 2 and battery all seal with sealed packaging material (if the encapsulation of moulding plastics, can be water-fast, also can become the different swimming cap of a single individual configuration), can be similar electric toothbrush's charge structure.

(children) swimming pool safety monitoring swimming cap device model: the swimming cap with water pressure detection and (GPS) positioning is further provided with a high-definition panoramic camera, a PC end or a server end, a display and a mobile phone app of the lifesaving personnel; swimming cap with water pressure detection and (GPS) positioning: the swimming cap is provided with a water pressure sensor 5 (arranged at the edge of the swimming cap), a (GPS or Beidou or UWB positioning module) positioning module 3, a Wifi module and an embedded microcontroller, wherein the water pressure sensor, the (GPS) positioning module and the Wifi module are all connected to the embedded microcontroller; the types of pressure sensors are: CM5541, waterproof digital pressure sensor, has the characteristics of low-power consumption. The WIFI module uses AP6212A, has the characteristics of low-power consumption. The embedded microcontroller uses the stm32f103 chip and has the characteristics of low power consumption and high performance.

The swimmer must wear the swimming cap 1 to swim; positioning modules such as a GPS module and a Beidou module are suitable for being used outdoors; when the UWB positioning tag is used for an indoor swimming pool, the UWB positioning tag can be arranged on the swimming cap body (the molded package can resist water and can also be a single body), and UWB positioning pulses are continuously sent; the three UWB base stations respectively measure UWB positioning pulses and feed back measurement results to a PC (personal computer) end (or server end); the PC end estimates the position of the UWB positioning tag by adopting a TOF algorithm according to the received measurement result, so that the downstream swimmer of the swimming cap is positioned; the criterion of the upper and lower water surfaces of the head is still provided by a pressure sensor of the swimmer swimming cap, and the types of the pressure sensor are as follows: and the CM5541 and the like can be transmitted to the PC side (server side) through the AD conversion post-transmission WIFI module.

(II) the operation mode of the system, namely the scheme flow of the utility model:

1. coordinate information of the swimmers and judgment information of the swimmers above and below the water surface are acquired through the swimming cap and transmitted into the PC end, the swimmers on the water surface are marked as green by the PC end, and the swimmers below the water surface are marked as yellow.

2. The image collected by the high-definition panoramic camera is matched with a swimmer with yellow coordinates in the PC end, the specific position of the swimmer in the image is found, the image is collected within a certain time (8-20 seconds, different criteria are set at different age stages) and the swimmer is segmented.

3. And transmitting the segmented image into a trained convolutional neural network model (LeNet-5), identifying and judging the swimming posture of the image, and storing a judgment result in the period of time.

4. If the posture judgment result is that drowning is in place and the head of the person is below the water surface in the period of time, marking the person as red and sending alarm information to the mobile phone app of the rescue worker; otherwise its coordinates are relabeled to green.

5. The above judgment is carried out 1-4 times every 5-10 seconds.

Claims

1. A swimming pool safety monitoring swimming cap is characterized by comprising a swimming cap body, a water pressure detector, a positioning module, a Wifi module and an embedded microcontroller; the water pressure detector, the positioning module and the Wifi module are all electrically connected with the embedded microcontroller; the water pressure detector, the positioning module, the Wifi module and the embedded microcontroller are integrated into a sealing block and fixed with the swimming cap body; the positioning module is a GPS or Beidou module positioning module; or a UWB positioning tag is arranged on the swimming cap body.