Underwater emergency rescue support systemTechnical Field
The invention relates to the technical field of underwater rescue equipment, in particular to an underwater emergency rescue support system.
Background
The number of lakes and seas play places is increased, and swimming and diving safety accidents caused in the playing process also occur frequently. When a drowning accident occurs, the drowning accident generally sinks under water within 3 minutes and dies within 5-10 minutes, so that the gold rescue is said to be 5 minutes, and the earlier the drowning person is found, the greater the rescue probability is. At present, rescue signals are transmitted mainly through video monitoring equipment, surrounding personnel discovery and loud calling of drowning personnel, rescue personnel can drive to a drowning point for rescue through taking a yacht after discovery, and along with the development of technology, novel technologies such as remote control of unmanned navigation on the water surface and unmanned aerial vehicle throwing of rescue equipment are adopted to implement high-efficiency rapid rescue.
The drowning person can visually determine the position of the drowning person on the water surface, and once the drowning person submerges under water, a great deal of time is spent for searching, so that the rescue efficiency is reduced. Particularly, when accidents are sent in the processes of diving, playing, underwater investigation, construction and searching, the distress signal is difficult to send in time.
In addition, underwater training is required to be carried out frequently by underwater frogman, and the training of the limit of the human body is challenged in many times, and the frogman has safety guarantee equipment when training in a pool, but lacks a portable guarantee device in the offshore training process, so that the method for acquiring the position and vital sign information of the frogman team in real time is particularly important for guaranteeing the personal safety of the frogman. The patent CN210427786U discloses a water sound position indicating beacon for life saving, which has a water sound communication position indicating function, can actively or passively send a water sound position indicating signal when an accident occurs, has a two-way voice communication function, can realize two-way voice communication between rescue force at the water surface end and the inside of a submarine, is mainly used for guaranteeing rescue tasks of the submarine, has deep water working capacity, is complex and large in size, and is not suitable for being installed and used on an individual.
The underwater rescue is different from other rescue, the required rescue implementation efficiency is very high, but because the position of an underwater rescue-seeking person is difficult to accurately position, the underwater rescue is very difficult to carry out when the underwater rescue is carried out, and in addition, the underwater person also lacks a general rescue device, so that how the rescue person sends the rescue-seeking information to other people at the first time, how the rescue person obtains the position information of the rescue person under the water in real time, how the on-shore person obtains the vital sign information of the underwater operation person in real time, and how the underwater operation accident automatically calls for help is a key problem to be solved urgently in the underwater emergency rescue.
Disclosure of Invention
Aiming at the defects existing in the prior art, the inventor further designs and researches through underwater acoustic communication, ultra-short baseline positioning and multi-sensor information fusion technology. The rescue bracelet is used for collecting vital sign information, depth information and emergency call information of a human body, the collected information is transmitted to underwater position measuring equipment through underwater acoustic communication, the underwater position measuring equipment obtains position information and vital sign information of underwater personnel through an ultra-short baseline positioning technology, and finally state information of the underwater personnel is transmitted to a water monitoring center.
The invention provides an underwater emergency rescue support system which comprises an underwater position measuring device, a distress bracelet synchronous base, a multi-channel synchronous device and a water surface monitoring center. The underwater position measuring device can receive underwater sound communication state information sent by the help calling hand ring and simultaneously measure position information of the help calling hand ring, when the help calling hand ring sends help calling signals, the underwater position measuring device can send the received early warning information and the calculated position information to the water monitoring center, and the water monitoring center sends an alarm through the early warning device to rapidly remind rescue workers.
The underwater position measuring equipment comprises an ultra-short baseline array, a watertight cylinder left end cover, a signal acquisition output processing circuit, a watertight cylinder, a battery, a watertight cylinder right end cover, a transmitting transducer and a watertight communication cable. The ultra-short baseline array is arranged on the outer side of the left end cover of the watertight barrel, the signal acquisition output processing circuit is arranged on the inner side of the left end cover of the watertight barrel, the transmitting transducer is arranged on the outer side of the right end cover of the watertight barrel and is in vulcanization connection with the watertight communication cable, the battery is arranged on the inner side of the right end cover of the watertight barrel, the watertight communication cable is used for connecting the signal acquisition output processing circuit with the water surface monitoring center, and the internal electronic components are sealed through the watertight barrel, the left end cover and the right end cover of the watertight barrel.
The signal acquisition output processing circuit has the function of receiving GPS second pulse synchronization. The signal acquisition output processing circuit can actively transmit the underwater sound coding signal, the control command issued by the water surface monitoring center is coded through the signal processing unit to form an underwater sound modulation signal, then the analog modulation signal is converted into a PWM digital modulation signal, the signal is amplified through the digital power amplifier, and finally the control command is sent to the help calling bracelet through the transmitting transducer, so that people wearing the help calling bracelet can be subjected to emergency recall, or a work task command is transmitted.
The method comprises the steps of receiving state information sent by a help calling bracelet through an ultra-short baseline array, carrying out A/D conversion after filtering and amplifying the state information, carrying out data decoding processing on the received signals by a signal processing unit, calculating depth, vital signs, help calling signals and the like sent by the help calling bracelet, simultaneously carrying out position calculation processing, calculating azimuth information of the help calling bracelet relative to the hand ring by utilizing an ultra-short baseline positioning principle, calculating distance information of the help calling bracelet relative to the hand ring by utilizing a synchronous ranging technology, and finally carrying out data fusion processing on attitude sensor data, geomagnetic sensor data and GPS data to obtain the final geographic coordinate position of the help calling bracelet.
The underwater position measuring equipment mainly comprises two working modes, namely an active tracking mode monitoring mode and an emergency receiving mode.
The active tracking mode monitoring mode distress bracelet can send position signals regularly, and the underwater position measuring equipment can calculate the position information of underwater personnel in real time and transmit the position information to the monitoring center. The emergency receiving mode distress bracelet can send a position indication signal only on the premise of triggering the distress call, and the underwater position measuring equipment can trigger early warning after receiving the distress call signal.
The wearable help calling bracelet comprises a help calling bracelet base, a button, a vital sign monitoring module mounting groove, a help calling bracelet sealing cylinder, a transmitting-receiving integrated transducer, a rechargeable battery, a signal generation processing circuit, a help calling bracelet transparent end cover, a limiting boss, a depth sensor, a charging input anode, a charging input cathode, a power supply anode, a power supply cathode, a battery anode, a battery cathode, an LED display screen, an infrared pair tube, an LED indicator and a magnetic induction switch.
The portable electronic device comprises a first-aid hand ring base, a second-aid hand ring base, a rechargeable battery, a signal generating and processing circuit, a first-aid hand ring, a second-aid hand ring, a first-aid hand ring, a third-aid hand ring, a fourth-aid hand ring, a fifth-aid hand ring, a sixth-aid hand ring, a seventh-aid hand ring and a fourth-aid hand ring.
The help calling bracelet sealing cylinder and the transparent end cover of the help calling bracelet are sealed by an O-shaped sealing ring.
The transparent end cover of the distress bracelet is made of organic glass or other transparent hard materials, a limiting boss is arranged on the left side of the transparent end cover, and a depth sensor, a charging input anode and a charging input cathode are arranged on the transparent end cover.
The top of the signal generation processing circuit is provided with a power supply anode, a power supply cathode, an LED display screen and an infrared pair tube. The charging input anode, the power supply anode and the battery anode are in a coaxial state, and the charging input cathode, the power supply cathode and the battery cathode are in a coaxial state.
The signal generation processing circuit is provided with a charge-discharge management unit, current can flow from a charge input positive electrode to a battery positive electrode during charging, current can only flow from the battery positive electrode to a power supply positive electrode during discharging, and the same as a negative electrode, the charge-discharge management unit has local unidirectional current limiting capability, so that the charge input positive electrode and the charge input negative electrode can not have leakage current when the portable ring for calling help is worn and used underwater, and the electricity safety is ensured.
The signal generation processing circuit is also provided with an LED indicator light and a magnetic induction switch, the front end of the magnetic induction switch is provided with a button, a strong magnet is arranged in the button, and when the button is close to the magnetic induction switch, the magnetic induction switch is turned on and turned off when the button is far away.
When the help calling bracelet is worn on the water surface, the help calling bracelet is charged through a charging contact on the transparent end cover of the help calling bracelet, and the GPS second pulse synchronization and the configuration working mode are realized through infrared geminate transistors.
When the help-seeking bracelet is worn under water, the signal processing unit acquires the signal input quantity of the vital sign monitoring module, the transceiver-integrated transducer, the depth sensor and the magnetic induction switch in real time.
The vital sign monitoring module can monitor heart rate, blood pressure and blood oxygen of a human body in real time, judges whether an accident happens to underwater personnel by identifying whether abnormal mutation happens to the heart rate, the blood pressure and the blood oxygen of the human body, automatically and periodically sends a distress signal if mutation happens, and the LED indicator lamp starts to flash, and can release the distress through the button if false triggering happens.
The magnetic induction switch can have a plurality of trigger modes such as single click, double click, three click, long press and the like to represent different setting modes.
The depth sensor can measure the depth of underwater personnel and is used for informing rescue personnel or monitoring personnel, and the current water depth of the underwater personnel.
The receiving and transmitting integrated transducer works in a receiving state mostly, the receiving and transmitting integrated transducer transmits signals to the amplifying filter after passing through the receiving and transmitting converter, the amplifying filter amplifies and filters the signals, the A/D converter acquires input signals in real time, the signal processing unit recognizes and decodes the input signals, judges whether the signals are effective signals, a command decoding result is displayed on the LED display screen and is automatically responded, and underwater personnel can also manually confirm and respond after receiving the commands sent by the underwater position measuring equipment.
When the help calling bracelet is worn to send signals or answers, the acquired depth, heart rate, blood pressure and blood oxygen information are encoded to form underwater sound modulation signals, then the analog modulation signals are converted into PWM digital modulation signals, the signals are amplified through the digital power amplifier, the transceiver integrated transducer works in a transmitting mode, finally the transmitting transducer is used for transmitting data to underwater position measuring equipment, and the underwater position measuring equipment is used for transmitting information to a water surface monitoring center to wait for processing.
The wearing distress bracelet is provided with an active position indication mode and an emergency distress mode.
The active site indication mode can send sound pulse signals at regular time, wherein the sound pulse signals comprise depth, heart rate, blood pressure and blood oxygen information of a user. The emergency call mode is to trigger the call by actively pressing a button when a user encounters drowning or other accidents, or automatically trigger the call when the vital signs of the human body are abnormal, and send an acoustic pulse signal at regular time after triggering the call, and not send the signal at ordinary times.
The help calling bracelet synchronous base comprises a help calling bracelet synchronous base cabin body, a synchronous output and charging circuit, a charging output negative electrode, a charging output positive electrode, an infrared pair tube and a synchronous cable.
The synchronous cable on the cabin body of the synchronous base of the distress bracelet is connected with the synchronous output and charging circuit and then connected with the synchronous cable joint, so that charging, communication and synchronous signal transmission are realized.
The synchronous output and charging circuit is provided with a charging output negative electrode, a charging output positive electrode and an infrared geminate transistor, and the limiting grooves on the cabin body of the synchronous base of the help calling bracelet are in limiting and error-preventing fit with the limiting bosses on the help calling bracelet.
The charging output cathode is connected with the charging input cathode, the charging output anode is connected with the charging input anode, and the rear center of the transparent end cover of the interval distress bracelet of the infrared pair tube is opposite.
The infrared pair tubes are opposite in receiving and transmitting, have full duplex communication capability, and realize data communication and GPS second pulse synchronous signal transmission by utilizing non-contact information transmission capability.
The multipath synchronization equipment comprises a synchronization cable joint, a synchronization control box, a multichannel synchronization control circuit, a GPS and a comprehensive configuration cable.
The synchronous cable connector can be connected with synchronous cables of a plurality of distress hand ring synchronous bases, and the multichannel synchronous control circuit can synchronously carry out GPS second pulse synchronization on a plurality of distress hand rings and transmit configuration information issued by the water surface monitoring center.
The invention introduces the working principle that the underwater emergency rescue support system realizes safety monitoring of underwater personnel and quick response under emergency by integrating various technical components to cooperatively work. The system is characterized in that wireless underwater acoustic communication is realized between the distress bracelet and the underwater position measuring equipment. The distress bracelet is equipped with vital sign monitoring and depth measurement functions, capable of detecting the status of the wearer and automatically or manually sending distress signals in case of detected anomalies or emergency. These signals are received by underwater position measurement devices via underwater acoustic communications, which calculate the exact position of the distress bracelet using ultra short baseline positioning techniques and other sensor data (such as attitude, geomagnetism and GPS). The underwater position measurement device forwards this information to the water surface monitoring center along with vital sign data from the distress bracelet. The multipath synchronization equipment ensures the time synchronization of all the distress hand rings, so that the positioning of the whole system is more accurate and reliable. In addition, the system supports periodic location reporting (active tracking mode) and emergency calls in distress (emergency reception mode), ensuring that rescue actions can be initiated quickly even without regular communication. The overall process is highly dependent on seamless collaboration among the components, as well as accurate time synchronization and efficient data processing capabilities.
Compared with the prior art, the invention has the beneficial effects that:
(1) Compared with the common loud help calling modes of video monitoring equipment discovery, surrounding personnel discovery and drowning personnel, the help calling bracelet can rapidly transmit help calling information to a monitoring center, and rescue work can be carried out at the first time of an accident.
(2) Compared with the existing underwater rescue and searching technology, the distress bracelet and the underwater position measurement device can monitor the position information and vital sign information of a person calling for help in real time, guide rescue workers to quickly find rescue targets, reduce the search and rescue time to the greatest extent and improve the rescue success rate.
(3) Compared with the existing wearable inflatable air bag, the distress bracelet provided by the invention has vital sign monitoring capability, and can automatically call for help when the abnormal sign is judged, so that the defect that underwater operators cannot actively call for help and escape when an underwater accident occurs is overcome.
(4) Compared with the existing technology of 'a water sound position indication beacon for life saving', the invention has smaller volume, can realize portable wearing, has the function of two-way information conduction, can realize emergency recall in emergency, and has wider application range.
(5) The underwater position measuring equipment can monitor a plurality of underwater personnel on line in real time, can play a better role in guaranteeing underwater operation and training personnel, and can monitor the operation area of the underwater personnel.
(6) The distress bracelet adopts a non-contact magnetic induction design and an infrared geminate transistor information transmission design, reduces unnecessary sealing structure design, and has higher use reliability.
(7) The multi-channel synchronizing device can synchronously set a plurality of distress hand rings and a working mode, and is convenient for use in amusement places with a plurality of users.
(8) The emergency rescue security system has simple composition and small volume, and can meet the use requirements of fixed places and mobile places, even if the emergency rescue security system can be used in any area on the sea or the lake.
Drawings
Fig. 1 is a diagram showing the construction of the system according to the present invention.
Fig. 2 is a block diagram of the system components of the present invention.
FIG. 3 is a schematic view of the underwater position measuring apparatus of the present invention.
Fig. 4 is a functional block diagram of the underwater position measuring apparatus of the present invention.
Fig. 5 is a schematic diagram of a help calling bracelet according to the present invention.
Fig. 6 is a side view of the distress bracelet of the present invention.
Fig. 7 is a diagram showing the connection relationship inside the help calling bracelet according to the present invention.
Fig. 8 is a diagram showing the positional relationship between a button and a magnetic induction switch according to the present invention.
Fig. 9 is a functional block diagram of the help calling bracelet of the present invention.
Fig. 10 is a schematic diagram of a synchronous base structure of a distress bracelet according to the present invention.
FIG. 11 is a diagram showing the connection relationship between the help calling bracelet and the synchronous base.
Fig. 12 is a schematic diagram of a multi-channel synchronization apparatus according to the present invention.
1-Underwater position measuring equipment, 2-distress bracelet, 3-distress bracelet synchronous base, 4-multipath synchronous equipment, 1-ultrashort baseline array, 1-2-watertight cylinder left end cover, 1-3-signal acquisition output processing circuit, 1-4-watertight cylinder, 1-5-battery, 1-6-watertight cylinder right end cover, 1-7-transmitting transducer, 1-8-watertight communication cable, 2-1-distress bracelet base, 2-button, 2-3-vital sign monitoring module mounting groove, 2-4-distress bracelet sealing cylinder, 2-5-transmitting and receiving integrated transducer, 2-6-rechargeable battery, 2-7-signal generation processing circuit, 2-8-distress bracelet transparent end cover, 2-9-limit boss, 2-10-depth sensor, 2-11-charge input anode, 2-12-charge input cathode, 2-13-power supply anode, 2-14-power supply cathode, 2-15-battery anode, 2-16-battery cathode, 2-17-LED display screen, 2-18-infrared pair tube, 2-19-LED indicator lamp, 2-20-magnetic induction switch, 3-1-distress bracelet synchronous base cabin, 3-2-synchronous output and charging circuit, 3-charge output cathode, 3-4-charge output anode, 3-5-infrared pair tube, 3-6-limit groove, 3-7-synchronous cable, 4-1-synchronous cable joint, 4-2-synchronous control box, 4-3-multichannel synchronous control circuit, 4-GPS and comprehensive configuration cable.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings in combination with the specific embodiments. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
As shown in fig. 1-2, an underwater emergency rescue support system comprises an underwater position measurement device 1, a distress bracelet 2, a distress bracelet synchronous base 3, a multi-channel synchronous device 4 and a water surface monitoring center. The underwater position measuring device 1 and the underwater position measuring device 4 are connected with a water surface monitoring center, the multipath synchronizing device 4 can be connected with a plurality of help calling bracelet synchronizing bases 3 and carry out GPS second pulse synchronization on the plurality of help calling bracelets 2, the underwater position measuring device 1 can receive underwater sound communication state information sent by the help calling bracelets 2 and measure position information of the help calling bracelets 2, and when the help calling bracelets 2 send help calling signals, the underwater position measuring device 1 can send the received early warning information and the calculated position information to the water surface monitoring center, and the water surface monitoring center sends an alarm through an early warning device to rapidly remind rescue workers.
As shown in fig. 3-4, the underwater position measuring device 1 comprises an ultra-short baseline array 1-1, a watertight barrel left end cover 1-2, a signal acquisition output processing circuit 1-3, a watertight barrel 1-4, a battery 1-5, a watertight barrel right end cover 1-6, a transmitting transducer 1-7 and a watertight communication cable 1-8. The ultra-short baseline array 1-1 is arranged on the outer side of the watertight barrel left end cover 1-2, the signal acquisition and output processing circuit 1-3 is arranged on the inner side of the watertight barrel left end cover 1-2, the transmitting transducer 1-7 is arranged on the outer side of the watertight barrel right end cover 1-6 and is connected with the watertight communication cable 1-8 in a vulcanization mode, the battery 1-5 is arranged on the inner side of the watertight barrel right end cover 1-6, the watertight communication cable 1-8 is used for connecting the signal acquisition and output processing circuit 1-3 with a water surface monitoring center, and the internal electronic assembly components are sealed through the watertight barrel 1-4 and the watertight barrel left end cover and the watertight barrel right end cover.
The signal acquisition output processing circuit 1-3 has a function of receiving GPS second pulse synchronization. The signal acquisition output processing circuit 1-3 can actively transmit an underwater sound coding signal, the control command issued by a water surface monitoring center is coded through the signal processing unit to form an underwater sound modulation signal, then the analog modulation signal is converted into a PWM digital modulation signal, the signal is amplified through a digital power amplifier, and finally the control command is sent to the help calling bracelet 2 by utilizing a transmitting transducer, so that emergency recall can be carried out on personnel wearing the help calling bracelet 2, or a work task command can be transmitted.
The ultra-short baseline array 1-1 receives the state information sent by the help calling bracelet 2, performs A/D conversion after filtering and amplifying, the signal processing unit performs data decoding processing on the received signals, and solves the depth, vital sign, help calling signal and the like sent by the help calling bracelet 2, meanwhile performs position calculation processing, calculates the azimuth information of the help calling bracelet 2 relative to the self by utilizing the ultra-short baseline positioning principle, calculates the distance information of the help calling bracelet 2 relative to the self by utilizing the synchronous ranging technology, and finally performs data fusion processing by utilizing the attitude sensor data, the geomagnetic sensor data and the GPS data to obtain the final geographic coordinate position of the help calling bracelet 2.
When the underwater position measuring equipment 1 is used for guaranteeing the safety of a person wearing the distress bracelet 2, two working modes, namely an active tracking mode monitoring mode and an emergency receiving mode are mainly adopted. The active tracking mode monitoring mode distress bracelet 2 can send position signals regularly, the underwater position measuring equipment 1 can calculate the position information of underwater personnel in real time and transmit the position information to the monitoring center, the position information and vital sign information of the underwater personnel are displayed in real time in the monitoring center, and the working mode is suitable for the fields of underwater training and operation, fewer operation personnel are fewer, and the number of the operation personnel is not more than 10. The emergency receiving mode distress bracelet 2 only can send a position indication signal on the premise of triggering the distress, the underwater position measurement equipment 1 can trigger early warning after receiving the distress signal, position information and vital sign information of a distress person are displayed, and the mode is used in amusement places or other environments where the distress bracelet 2 is used.
As shown in fig. 5-8, the wearable help-seeking bracelet 2 comprises a help-seeking bracelet base 2-1, a button 2-2, a vital sign monitoring module mounting groove 2-3, a help-seeking bracelet sealing cylinder 2-4, a transmitting-receiving integrated transducer 2-5, a rechargeable battery 2-6, a signal generating and processing circuit 2-7, a help-seeking bracelet transparent end cover 2-8, a limiting boss 2-9, a depth sensor 2-10, a charging input positive electrode 2-11, a charging input negative electrode 2-12, a power supply positive electrode 2-13, a power supply negative electrode 2-14, a battery positive electrode 2-15, a battery negative electrode 2-16, an LED display screen 2-17, an infrared pair of tubes 2-18, an LED indicator lamp 2-19 and a magnetic induction switch 2-20.
As shown in fig. 5, the help calling bracelet base 2-1 is used for fastening the wearing help calling bracelet 2 on an arm, a button 2-2 is arranged on the side face of the help calling bracelet base 2-1, a vital sign monitoring module mounting groove 2-3 is reserved in the middle of the help calling bracelet base, a help calling bracelet sealing cylinder 2-4 is arranged at the top of the help calling bracelet base 2-1, a transmitting-receiving integrated transducer 2-5 is arranged in the help calling bracelet sealing cylinder 2-4, the transmitting-receiving integrated transducer 2-5 is closely attached to the inner wall of the help calling bracelet sealing cylinder 2-4, sound transmission materials are filled between the transmitting-receiving integrated transducer and the inner wall, the help calling bracelet sealing cylinder 2-4 is made of aluminum alloy or other metal sound transmission materials so as to ensure good sound transmission effects, and a rechargeable battery 2-6 and a signal generating processing circuit 2-7 are arranged at the inner side of the transmitting-receiving integrated transducer 2-5. The help calling bracelet sealing cylinder 2-4 and the help calling bracelet transparent end cover 2-8 are sealed by an O-shaped sealing ring.
As shown in FIG. 6, the transparent end cover 2-8 of the distress bracelet is made of organic glass or other transparent hard materials, the left side of the transparent end cover is provided with a limiting boss 2-9, and a depth sensor 2-10, a charging input anode 2-11 and a charging input cathode 2-12 are arranged.
As shown in FIG. 7, the top of the signal generation processing circuit 2-7 is provided with a power supply anode 2-13, a power supply cathode 2-14, an LED display screen 2-17 and an infrared pair tube 2-18. After the installation, the charging input anode 2-11, the power supply anode 2-13 and the battery anode 2-15 are in a coaxial state, and the charging input cathode 2-12, the power supply cathode 2-14 and the battery cathode 2-16 are in a coaxial state. The signal generation processing circuit 2-7 is provided with a charge and discharge management unit, current can flow from the charge input positive electrode 2-11 to the battery positive electrode 2-15 during charging, current can only flow from the battery positive electrode 2-15 to the power supply positive electrode 2-13 during discharging, and the charge and discharge management unit has a local unidirectional current limiting capability similarly to the negative electrode, so that the charge input positive electrode 2-11 and the charge input negative electrode 2-12 can not have leakage current when the help-seeking bracelet 2 is worn under water, and electricity safety is ensured.
As shown in fig. 8, the signal generating and processing circuit 2-7 is further configured with an LED indicator lamp 2-19 and a magnetic induction switch 2-20, the front end of the magnetic induction switch 2-20 is provided with a button 2-2, a strong magnet is installed inside the button 2-2, when the button 2-2 is close to the magnetic induction switch 2-20, the magnetic induction switch 2-20 is turned on, and when the button is far away, the button is turned off, so that the operation information input of a user is realized by utilizing the non-contact advantage of magnetic induction, and the design of a dynamic sealing structure is avoided.
As shown in fig. 9, when the help calling bracelet 2 is worn on the water surface, the help calling bracelet 2 is charged through the charging contact on the transparent end cover 2-8 of the help calling bracelet, and the GPS second pulse synchronization and the configuration working mode are realized through the infrared pair tubes 2-18. When the help calling bracelet 2 is worn under water, the signal processing unit acquires the signal input quantity of the vital sign monitoring module, the transceiver integrated transducer 2-5, the depth sensor 2-10 and the magnetic induction switch 2-20 in real time. The vital sign monitoring module can monitor heart rate, blood pressure and blood oxygen of a human body in real time, judges whether an accident happens to underwater personnel by identifying whether abnormal mutation happens to the heart rate, the blood pressure and the blood oxygen of the human body, automatically and periodically sends a distress signal if mutation happens, and the LED indicator lamp 2-19 starts to flash, and the underwater personnel can release the distress through the button 2-2 if false triggering happens. The magnetic induction switches 2-20 may have a variety of trigger modes, such as single click, double click, triple click, long press, etc., to represent different setting modes. The depth sensor 2-10 can measure the depth of underwater personnel and is used for informing rescue personnel or monitoring personnel of the current water depth of the underwater personnel. Most of the receiving and transmitting integrated transducers 2-5 work in a receiving state, the receiving and transmitting integrated transducers transmit signals to the amplifying filter after passing through the receiving and transmitting converter, the amplifying filter amplifies and filters the signals, the A/D converter acquires input signals in real time, the signal processing unit recognizes and decodes the input signals to judge whether the signals are effective signals, the command decoding result is displayed on the LED display screens 2-17 and automatically responds, and underwater personnel can also manually confirm and respond after receiving the commands sent by the underwater position measuring equipment 1. When the help calling bracelet 2 is worn to send signals or answers, the acquired depth, heart rate, blood pressure and blood oxygen information are encoded to form underwater sound modulation signals, then the analog modulation signals are converted into PWM digital modulation signals, the signals are amplified through a digital power amplifier, a transceiver can work in a transmitting mode, finally, data are sent to the underwater position measuring equipment 1 by utilizing a transmitting transducer, and the information is transmitted to a water surface monitoring center by the underwater position measuring equipment 1 to wait for processing.
The wearing distress bracelet 2 is provided with an active position indication mode and an emergency distress mode. The active position indication mode can send sound pulse signals at regular time, the sound pulse signals comprise depth, heart rate, blood pressure and blood oxygen information of a user, and the underwater position measurement device 1 can track and monitor the user in real time on line. The emergency call mode is to trigger the call by actively pressing the button 2-2 when the user encounters drowning or other accidents, or automatically trigger the call when the vital signs of the human body are abnormal, and send the acoustic pulse signal at regular time after triggering the call, and not send the signal at ordinary times.
As shown in fig. 10, the help calling bracelet synchronization base 3 comprises a help calling bracelet synchronization base cabin 3-1, a synchronization output and charging circuit 3-2, a charging output negative electrode 3-3, a charging output positive electrode 3-4, an infrared pair tube 3-5 and a synchronization cable 3-7. The synchronous cable 3-7 on the help calling bracelet synchronous base cabin body 3-1 is connected with the synchronous output and charging circuit 3-2 and then connected with the synchronous cable connector 4-1, so that charging, communication and synchronous signal transmission are realized. The synchronous output and charging circuit 3-2 is provided with a charging output negative electrode 3-3, a charging output positive electrode 3-4 and an infrared geminate transistor 3-5, limiting grooves 3-6 on the cabin body 3-1 of the synchronous base of the distress bracelet and limiting bosses 2-9 on the distress bracelet are used for limiting and error-preventing matching, an assembly effect shown in fig. 11 is formed, the charging output negative electrode 3-3 is connected with a charging input negative electrode 2-12, the charging output positive electrode 3-4 is connected with the charging input positive electrode 2-11, and the infrared geminate transistor 3-5 is opposite to the infrared geminate transistor 2-18 after being separated from the transparent end cover 2-8 of the distress bracelet.
The infrared pair tube 3-5 is opposite to the infrared pair tube 2-18 in receiving and transmitting, has full duplex communication capability, realizes data communication and transmission of GPS second pulse synchronous signals by utilizing non-contact information transmission capability, reduces information transmission contact design, reduces sealing design and improves use reliability.
As shown in fig. 12, the multi-channel synchronization device 4 includes a synchronization cable connector 4-1, a synchronization control box 4-2, a multi-channel synchronization control circuit 4-3, and a GPS and integrated configuration cable 4-4. The GPS equipment and the water surface monitoring center are connected with the GPS and comprehensive configuration cable 4-4. The synchronous cable connector 4-1 can be connected with synchronous cables 3-7 of the synchronous base 3 of the plurality of distress hand rings, and the multichannel synchronous control circuit 4-3 can synchronously perform GPS second pulse synchronization on the plurality of distress hand rings 2 and transmit configuration information issued by a water surface monitoring center.
When the device is used, the number of actually used wearable help calling bracelets 2 can be selected, and the underwater position measuring device 1 and the help calling bracelets 2 are synchronized and set in working modes through the multipath synchronizing device 4, and the synchronization can be set into various timing synchronization modes such as 1s, 2s and 3 s. When the underwater position measurement device 1 and the help calling bracelet 2 respectively work in an active tracking mode monitoring mode and an active position indicating mode, the underwater position measurement device 1 can monitor the position, the blood pressure, the heart rate and the blood oxygen information sent by the help calling bracelet 2 in real time, and rescue actions can be timely carried out when help calling information is received or abnormal behaviors are found. When the underwater position measurement device 1 and the distress bracelet 2 respectively work in an emergency receiving mode and an emergency calling mode, if a user triggers a distress signal of the distress bracelet 2, the underwater position measurement device 1 triggers monitoring, starts to monitor the distress bracelet 2 in real time, acquires information of the position, blood pressure, heart rate and blood oxygen of the distress bracelet 2, and timely carries out rescue actions.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.