Underwater emergency rescue guarantee system

Abstract

The invention discloses an underwater emergency rescue guarantee system which integrates underwater position measuring equipment, a distress call bracelet, a synchronous base of the distress call bracelet, multi-path synchronous equipment and a water surface monitoring center to jointly construct a set of efficient life safety guarantee network. The core of the system is to realize accurate monitoring of the position and the physiological state of an underwater operator by using a GPS pulse per second synchronization technology and underwater acoustic communication. When an abnormal condition is detected or a distress signal is received, the system can respond quickly, the position of a person in distress is calculated through underwater position measuring equipment, information is transmitted to a water surface monitoring center in real time, and an emergency rescue program is activated. The whole system adopts an advanced signal processing technology and a waterproof design, so that the stability and the reliability in an extreme environment are ensured, and the speed and the efficiency of underwater rescue actions are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater rescue equipment, and in particular to an underwater emergency rescue support system. Background Art

[0002] There are more and more lake and sea recreational places, and swimming and diving safety accidents caused by the process of playing often occur. When a drowning accident occurs, the person will generally sink into the water within 3 minutes and die within 5 to 10 minutes. There is a saying that the golden rescue time is 5 minutes, so the earlier the drowning person is found, the greater the probability of rescue. At present, rescue signals are mainly transmitted through video surveillance equipment, discovery by surrounding personnel, and loud calls for help from drowning people. When rescuers discover the drowning, they rush to the drowning point by speedboat for rescue. With the development of technology, new technologies such as remote-controlled unmanned navigation on the water surface and drone delivery of life-saving equipment are also being adopted to implement efficient and rapid rescue.

[0003] When a drowning person is on the surface of the water, the position of the drowning person can be determined visually. Once the drowning person sinks into the water, it takes a lot of time to search, and the rescue efficiency becomes low. Especially when an accident occurs during diving, underwater investigation, construction, and search, it is difficult to send a distress signal in time.

[0004] In addition, underwater frogmen need to conduct underwater training frequently, and in many cases, the training is challenging the limits of the human body. Frogmen have safety equipment when they are training in the pool, but they lack portable safety equipment during training near the coast. It is particularly important to obtain the location and vital signs of the frogman team in real time to ensure the personal safety of frogmen. Patent "CN210427786U" announced "a life-saving water acoustic positioning beacon", which has a water acoustic communication positioning function, can actively or passively send water acoustic positioning signals when an accident occurs, and has a two-way voice communication function, which can realize two-way voice communication between the surface rescue force and the submarine. The device is mainly used to ensure the rescue mission of the submarine, which requires deep-water working ability. The device is relatively complex and large in size, and is not suitable for installation and use on individuals.

[0005] Underwater rescue is different from other rescue operations. It requires a very high efficiency in the implementation of rescue. However, it is difficult to accurately locate the position of the underwater rescue personnel, so underwater search and rescue is very difficult. In addition, underwater personnel also lack universal rescue equipment. Therefore, how can the rescuer send a distress message to other personnel as soon as possible? How can the rescuer obtain the rescuer's underwater location information in real time? How can the shore personnel obtain the vital signs information of the underwater workers in real time? How can the underwater operation accident be automatically called for help? These are the key issues that need to be solved in underwater emergency rescue. Summary of the invention

[0006] In view of the deficiencies in the above-mentioned prior art, the inventor has further designed and studied, and through underwater acoustic communication, ultra-short baseline positioning, and multi-sensor information fusion technology, a rescue bracelet is used to collect human vital signs information, depth information, and emergency call information, and the collected information is transmitted to the underwater position measurement device through underwater acoustic communication. The underwater position measurement device obtains the position information and vital signs information of the underwater personnel through ultra-short baseline positioning technology, and finally transmits the status information of the underwater personnel to the surface monitoring center.

[0007] Specifically, the present invention provides an underwater emergency rescue support system, including an underwater position measurement device, a rescue bracelet, a rescue bracelet synchronization base, a multi-channel synchronization device, and a surface monitoring center. The multi-channel synchronization device and the underwater position measurement device are both connected to the surface monitoring center; the multi-channel synchronization device can be connected to multiple rescue bracelet synchronization bases and synchronize multiple rescue bracelets with GPS pulses per second; the underwater position measurement device can receive the underwater acoustic communication status information sent by the rescue bracelet, and measure the position information of the rescue bracelet at the same time; when the rescue bracelet transmits a distress signal, the underwater position measurement device can send the received warning information and the calculated position information to the surface monitoring center, and the surface monitoring center sends an alarm through the warning device to quickly remind the rescue personnel.

[0008] The underwater position measurement device includes an ultra-short baseline array, a left end cover of a watertight cylinder, a signal acquisition output processing circuit, a watertight cylinder, a battery, a right end cover of a watertight cylinder, a transmitting transducer, and a watertight communication cable. The ultra-short baseline array is installed on the outside of the left end cover of the watertight cylinder, and the signal acquisition output processing circuit is installed on the inside of the left end cover of the watertight cylinder; the transmitting transducer is installed on the outside of the right end cover of the watertight cylinder and is vulcanized and connected to the watertight communication cable, and the battery is installed on the inside of the right end cover of the watertight cylinder; the watertight communication cable connects the signal acquisition output processing circuit to the surface monitoring center; the internal electronic components are sealed through the watertight cylinder and the left and right end covers of the watertight cylinder.

[0009] The signal acquisition and output processing circuit has the function of receiving GPS second pulse synchronization. The signal acquisition and output processing circuit can actively transmit the underwater acoustic coding signal. It encodes the control command issued by the surface monitoring center through the signal processing unit to form an underwater acoustic modulation signal, and then converts the analog modulation signal into a PWM digital modulation signal, amplifies the signal through a digital power amplifier, and finally uses the transmitting transducer to send the control command to the rescue bracelet, which can be used to urgently recall the personnel wearing the rescue bracelet or transmit work task commands.

[0010] The ultra-short baseline array receives the status information sent by the rescue bracelet, performs A / D conversion after filtering and amplification processing, and the signal processing unit will perform data decoding processing on the received signal to calculate the depth, vital signs, distress signal, etc. sent by the rescue bracelet; at the same time, it will perform position calculation processing, use the ultra-short baseline positioning principle to calculate the azimuth information of the rescue bracelet relative to itself, and then use the synchronous ranging technology to calculate the distance information of the rescue bracelet relative to itself, and finally use the attitude sensor data, geomagnetic sensor data, and GPS data to perform data fusion processing to obtain the final geographical coordinate position of the rescue bracelet.

[0011] The underwater position measurement device mainly has two working modes, active tracking mode, monitoring mode and emergency receiving mode.

[0012] Active tracking mode Monitoring mode The rescue bracelet will send position signals regularly, and the underwater position measurement device will calculate the position information of the underwater personnel in real time and transmit it to the monitoring center. Emergency receiving mode The rescue bracelet will send position indication signals only when the rescue call is triggered, and the underwater position measurement device will trigger an early warning when receiving the rescue signal.

[0013] The wearable distress call bracelet comprises a distress call bracelet base, a button, a vital sign monitoring module installation slot, a distress call bracelet sealing tube, a transceiver integrated transducer, a rechargeable battery, a signal generating and processing circuit, a distress call bracelet transparent end cover, a limit boss, a depth sensor, a charging input positive electrode, a charging input negative electrode, a power supply positive electrode, a power supply negative electrode, a battery positive electrode, a battery negative electrode, an LED display screen, an infrared pair of tubes, an LED indicator light, and a magnetic induction switch.

[0014] The rescue bracelet base is used to fasten the rescue bracelet to the arm, a button is installed on the side of the rescue bracelet base, a vital sign monitoring module installation groove is reserved in the middle, and a rescue bracelet sealing tube is installed on the top of the rescue bracelet base; the rescue bracelet sealing tube has a transceiver integrated transducer installed inside, the transceiver integrated transducer is tightly attached to the inner wall of the rescue bracelet sealing tube, and the space between the transceiver and the inner wall is filled with sound-transmitting material, and the rescue bracelet sealing tube is made of aluminum alloy or other metal sound-transmitting materials to ensure a good sound-transmitting effect; a rechargeable battery and a signal generation and processing circuit are installed inside the transceiver integrated transducer.

[0015] An O-ring is used to seal between the sealing tube of the rescue bracelet and the transparent end cover of the rescue bracelet.

[0016] The transparent end cover of the rescue bracelet is made of organic glass or other transparent hard materials. A limited position boss is designed on the left side thereof, and a depth sensor, a charging input positive electrode and a charging input negative electrode are installed thereon.

[0017] The top of the signal generation and processing circuit is equipped with a power supply positive electrode, a power supply negative electrode, an LED display screen, and an infrared pair of tubes. The charging input positive electrode, the power supply positive electrode, and the battery positive electrode are in a coaxial state, and the charging input negative electrode, the power supply negative electrode, and the battery negative electrode are in a coaxial state.

[0018] The signal generation and processing circuit has a charge and discharge management unit. When charging, the current can flow from the positive charging input to the positive battery electrode. When discharging, the current can only flow from the positive battery electrode to the positive power supply electrode. Similarly, for the negative electrode, the charge and discharge management unit has a local unidirectional current limiting capability to ensure that there is no leakage current between the positive charging input and the negative charging input when the rescue bracelet is used underwater, thereby ensuring the safety of electricity use.

[0019] The signal generation and processing circuit is also configured with an LED indicator light and a magnetic induction switch. The front end of the magnetic induction switch is a button, and a strong magnet is installed inside the button. When the button is close to the magnetic induction switch, the magnetic induction switch is turned on, and when it is far away, it is turned off.

[0020] When the distress call bracelet is worn on the water surface, the distress call bracelet is charged through the charging contacts on the transparent end cover of the distress call bracelet, and the GPS second pulse synchronization and configuration working mode are realized through the infrared pair tube.

[0021] When the rescue bracelet is worn underwater, the signal processing unit collects signal inputs from the vital signs monitoring module, the transceiver-transducer, the depth sensor, and the magnetic induction switch in real time.

[0022] The vital signs monitoring module can monitor the human heart rate, blood pressure and blood oxygen in real time. By identifying whether there are abnormal changes in the human heart rate, blood pressure and blood oxygen, it can determine whether an accident has occurred to the underwater person. If a sudden change occurs, a distress signal will be automatically sent periodically and the LED indicator will start flashing. If it is a false trigger, the underwater person can cancel the distress call by pressing a button.

[0023] The magnetic induction switch can have multiple trigger modes such as single click, double click, triple click, long press, etc. to represent different setting modes.

[0024] Depth sensors can measure the depth of underwater people and are used to inform rescuers or monitoring personnel of the current water depth of underwater people.

[0025] Most transceivers work in the receiving state. The transceiver passes the signal to the amplifying filter through the transceiver converter for signal amplification and filtering. The A / D converter collects the input signal in real time. The signal processing unit identifies and decodes the input signal to determine whether it is a valid signal. The command decoding result is displayed on the LED display and automatically responds. The underwater personnel can also manually confirm the response after receiving the command sent by the underwater position measurement equipment.

[0026] When wearing a distress bracelet to send a signal or respond, the collected depth, heart rate, blood pressure and blood oxygen information will be encoded to form an underwater acoustic modulation signal, and then the analog modulation signal will be converted into a PWM digital modulation signal. The signal will be amplified by a digital power amplifier, and the transceiver will work in the transmitting mode. Finally, the transmitting transducer will be used to send the data to the underwater position measurement device, and the underwater position measurement device will pass the information to the surface monitoring center for processing.

[0027] The wearable rescue bracelet has an active position indicating mode and an emergency rescue mode.

[0028] The active position indication mode will periodically send an acoustic pulse signal, which includes the user's depth, heart rate, blood pressure and blood oxygen information. The emergency call mode is when the user encounters drowning or other accidents, by actively pressing the button to trigger a call for help, or automatically triggering a call for help when it is determined that the human body's vital signs are abnormal. After the call for help is triggered, an acoustic pulse signal is sent periodically, and no signal is sent at other times.

[0029] The rescue bracelet synchronization base comprises a rescue bracelet synchronization base cabin, a synchronization output and charging circuit, a charging output negative electrode, a charging output positive electrode, an infrared pair tube, and a synchronization cable.

[0030] The synchronization cable on the synchronization base cabin of the rescue bracelet is connected to the synchronization output and charging circuit, and then connected to the synchronization cable connector to achieve charging, communication, and synchronization signal transmission.

[0031] The synchronous output and charging circuit is provided with a charging output negative electrode, a charging output positive electrode and an infrared pair of tubes, and the limiting groove on the synchronous base cabin of the rescue bracelet is used to limit and prevent errors with the limiting boss on the rescue bracelet.

[0032] The negative pole of the charging output is connected to the negative pole of the charging input, the positive pole of the charging output is connected to the positive pole of the charging input, and the centers of the infrared pair of tubes are opposite to each other after the transparent end cover of the rescue bracelet.

[0033] The receiving and transmitting of the infrared pair of tubes are relative, with full-duplex communication capability, and use the non-contact information conduction capability to achieve data communication and the transmission of GPS second pulse synchronization signals.

[0034] The multi-channel synchronization equipment comprises a synchronization cable connector, a synchronization control box, a multi-channel synchronization control circuit, a GPS and a comprehensive configuration cable.

[0035] The GPS and integrated configuration cables are connected to the GPS equipment and the surface monitoring center; the synchronization cable connector can be connected to the synchronization cables of multiple rescue bracelet synchronization bases, and the multi-channel synchronization control circuit can simultaneously synchronize the GPS second pulses of multiple rescue bracelets and transmit the configuration information issued by the surface monitoring center.

[0036] The working principle of the present invention is introduced as follows: The underwater emergency rescue support system of the present invention realizes the safety monitoring of underwater personnel and rapid response in emergency situations by integrating multiple technical components to work together. The core of the system lies in the wireless hydroacoustic communication between the rescue bracelet and the underwater position measurement device. The rescue bracelet is equipped with vital signs monitoring and depth measurement functions, which can detect the wearer's status and automatically or manually send a distress signal when an abnormality or emergency is detected. These signals are received by the underwater position measurement device through hydroacoustic communication, and the latter uses ultra-short baseline positioning technology and other sensor data (such as attitude, geomagnetism and GPS) to calculate the exact location of the rescue bracelet. The underwater position measurement device forwards this information together with the vital signs data from the rescue bracelet to the surface monitoring center. The multi-channel synchronization device ensures the time synchronization of all rescue bracelets, making the positioning of the entire system more accurate and reliable. In addition, the system supports regular position reporting (active tracking mode) and emergency calls in distress (emergency receiving mode), ensuring that rescue operations can be quickly initiated even in the absence of regular communications. The entire process is highly dependent on the seamless collaboration between the components, as well as precise time synchronization and efficient data processing capabilities.

[0037] The beneficial effects of the present invention compared with the prior art are as follows:

[0038] (1) Compared with the commonly used methods of discovery by video surveillance equipment, discovery by surrounding personnel, and loud calls for help by drowning persons, the rescue bracelet of the present invention can quickly transmit the distress message to the monitoring center, so that rescue work can be carried out at the first time when an accident occurs.

[0039] (2) Compared with existing underwater rescue and search technologies, the rescue bracelet and underwater position measurement equipment of the present invention can monitor the location information and vital signs information of the rescuer in real time, guide rescue personnel to quickly find the rescue target, minimize the search and rescue time, and improve the rescue success rate.

[0040] (3) Compared with the existing wearable inflatable airbags, the rescue bracelet of the present invention has the ability to monitor vital signs and automatically call for help when abnormal vital signs are detected, thus making up for the inability of underwater workers to actively call for help or escape when underwater accidents occur.

[0041] (4) Compared with the existing "a life-saving water sound position beacon" technology, the rescue bracelet of the present invention is smaller in size and can be worn portable. It also has a two-way information transmission function and can be recalled in an emergency. Its scope of use is wider.

[0042] (5) The underwater position measurement equipment of the present invention can monitor multiple underwater personnel online in real time, which can provide better protection for underwater operations and training personnel, and can also supervise the working area of ​​underwater personnel.

[0043] (6) The rescue bracelet of the present invention adopts a non-contact magnetic induction design and an infrared information transmission design, which reduces unnecessary sealing structure design and has higher reliability in use.

[0044] (7) The multi-channel synchronization device of the present invention can synchronize and set the working mode of multiple rescue bracelets at the same time, which is convenient for use in amusement parks with a large number of users.

[0045] (8) The emergency rescue support system of the present invention has a simple structure and a small size, and can meet the use requirements in fixed places and mobile places, and can be used in any area at sea or on a lake. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a system composition structure diagram of the present invention.

[0047] Figure 2 It is a block diagram of the system composition of the present invention.

[0048] Figure 3 It is a schematic diagram of the structure of the underwater position measurement device of the present invention.

[0049] Figure 4 This is a block diagram of the working principle of the underwater position measurement device of the present invention.

[0050] Figure 5 It is a schematic diagram of the structure of the rescue bracelet of the present invention.

[0051] Figure 6 It is a side view of the rescue bracelet of the present invention.

[0052] Figure 7 This is a diagram of the internal connections of the rescue bracelet of the present invention.

[0053] Figure 8 This is a diagram showing the position relationship between the button and the magnetic induction switch of the present invention.

[0054] Fig. 9 This is a block diagram of the working principle of the rescue bracelet of the present invention.

[0055] Fig.10 It is a schematic diagram of the structure of the synchronous base of the rescue bracelet of the present invention.

[0056] Fig.11 This is a diagram showing the internal connection relationship between the rescue bracelet and the synchronization base of the present invention.

[0057] Fig.12 It is a schematic diagram of the structure of the multi-channel synchronization device of the present invention.

[0058] 1—underwater position measurement equipment, 2—help bracelet, 3—help bracelet synchronization base, 4—multi-channel synchronization equipment, 1-1—ultra-short baseline array, 1-2—left end cover of watertight cylinder, 1-3—signal acquisition and output processing circuit, 1-4—watertight cylinder, 1-5—battery, 1-6—right end cover of watertight cylinder, 1-7—transmitting transducer, 1-8—watertight communication cable, 2-1—help bracelet base, 2-2—button, 2-3—vital sign monitoring module installation slot, 2-4—help bracelet sealing cylinder, 2-5—transmitter-receiver integrated transducer, 2-6—rechargeable battery, 2-7—signal generation and processing circuit, 2-8—help bracelet transparent end cover, 2-9—limiting boss, 2-10—depth sensor, 2 -11—charging input positive pole, 2-12—charging input negative pole, 2-13—power supply positive pole, 2-14—power supply negative pole, 2-15—battery positive pole, 2-16—battery negative pole, 2-17—LED display screen, 2-18—infrared pair tube, 2-19—LED indicator light, 2-20—magnetic induction switch, 3-1—suspension bracelet synchronization base cabin, 3-2—synchronization output and charging circuit, 3-3—charging output negative pole, 3-4—charging output positive pole, 3-5—infrared pair tube, 3-6—limiting groove, 3-7—synchronization cable, 4-1—synchronization cable connector, 4-2—synchronization control box, 4-3—multi-channel synchronization control circuit, 4-4—GPS and integrated configuration cable. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail with reference to the accompanying drawings and in combination with specific embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0060] like Figures 1-2 As shown, an underwater emergency rescue support system includes an underwater position measurement device 1, a rescue bracelet 2, a rescue bracelet synchronization base 3, a multi-channel synchronization device 4, and a surface monitoring center. The multi-channel synchronization device 4 and the underwater position measurement device 1 are both connected to the surface monitoring center; the multi-channel synchronization device 4 can be connected to multiple rescue bracelet synchronization bases 3, and synchronize multiple rescue bracelets 2 with GPS pulses per second; the underwater position measurement device 1 can receive the underwater acoustic communication status information sent by the rescue bracelet 2, and measure the position information of the rescue bracelet 2 at the same time; when the rescue bracelet 2 sends a distress signal, the underwater position measurement device 1 can send the received warning information and the calculated position information to the surface monitoring center, and the surface monitoring center will issue an alarm through the warning device to quickly remind the rescue personnel.

[0061] like Figures 3-4As shown, the underwater position measurement device 1 includes an ultra-short baseline array 1-1, a left end cover 1-2 of a watertight cylinder, a signal acquisition output processing circuit 1-3, a watertight cylinder 1-4, a battery 1-5, a right end cover 1-6 of a watertight cylinder, a transmitting transducer 1-7, and a watertight communication cable 1-8. The ultra-short baseline array 1-1 is installed on the outside of the left end cover 1-2 of the watertight cylinder, and the signal acquisition output processing circuit 1-3 is installed on the inside of the left end cover 1-2 of the watertight cylinder; the transmitting transducer 1-7 is installed on the outside of the right end cover 1-6 of the watertight cylinder and is vulcanized and connected to the watertight communication cable 1-8, and the battery 1-5 is installed on the inside of the right end cover 1-6 of the watertight cylinder; the watertight communication cable 1-8 connects the signal acquisition output processing circuit 1-3 to the surface monitoring center; the internal electronic components are sealed by the watertight cylinder 1-4 and the left and right end covers of the watertight cylinder.

[0062] The signal acquisition and output processing circuit 1-3 has the function of receiving GPS second pulse synchronization. The signal acquisition and output processing circuit 1-3 can actively transmit the underwater acoustic coding signal. It encodes the control command issued by the surface monitoring center through the signal processing unit to form an underwater acoustic modulation signal, and then converts the analog modulation signal into a PWM digital modulation signal, amplifies the signal through a digital power amplifier, and finally uses the transmitting transducer to send the control command to the rescue bracelet 2, which can be used to urgently recall the personnel wearing the rescue bracelet 2 or transmit work task commands.

[0063] The ultra-short baseline array 1-1 receives the status information sent by the rescue bracelet 2, and performs A / D conversion after filtering and amplification. The signal processing unit will decode the received signal and calculate the depth, vital signs, distress signal, etc. sent by the rescue bracelet 2; at the same time, it will perform position calculation processing, using the ultra-short baseline positioning principle to calculate the orientation information of the rescue bracelet 2 relative to itself, and then use the synchronous ranging technology to calculate the distance information of the rescue bracelet 2 relative to itself, and finally use the attitude sensor data, geomagnetic sensor data, and GPS data to perform data fusion processing to obtain the final geographic coordinate position of the rescue bracelet 2.

[0064] When the underwater position measurement device 1 provides safety protection for the person wearing the rescue bracelet 2, there are two main working modes, active tracking mode, monitoring mode and emergency receiving mode. In the active tracking mode and monitoring mode, the rescue bracelet 2 will send a position signal at regular intervals, and the underwater position measurement device 1 will calculate the position information of the underwater personnel in real time and transmit it to the monitoring center, where the position information and vital signs of the underwater personnel will be displayed in real time. This working mode is suitable for underwater training and operation fields, and there are fewer operators, no more than 10 people. In the emergency receiving mode, the rescue bracelet 2 will only send a position signal under the premise of triggering a rescue call. When the underwater position measurement device 1 receives the rescue signal, it will trigger an early warning and display the position information and vital signs of the rescued person. This mode is suitable for amusement parks or other environments where more rescue bracelets 2 are used.

[0065] like Figures 5 to 8 As shown, the wearing of the rescue bracelet 2 includes a rescue bracelet base 2-1, a button 2-2, a vital sign monitoring module installation slot 2-3, a rescue bracelet sealing tube 2-4, a transceiver-transmitter 2-5, a rechargeable battery 2-6, a signal generating and processing circuit 2-7, a rescue bracelet transparent end cover 2-8, a limit 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 tube 2-18, an LED indicator light 2-19, and a magnetic induction switch 2-20.

[0066] like Figure 5 As shown, the rescue bracelet base 2-1 is used to fasten the rescue bracelet 2 to the arm, a button 2-2 is installed on the side of the rescue bracelet base 2-1, a vital sign monitoring module installation slot 2-3 is reserved in the middle, and the rescue bracelet sealing tube 2-4 is installed on the top of the rescue bracelet base 2-1; the rescue bracelet sealing tube 2-4 has a transceiver-transmitter 2-5 installed inside, and the transceiver-transmitter 2-5 is close to the inner wall of the rescue bracelet sealing tube 2-4, and the space between the inner wall and the inner wall is filled with sound-transmitting material, and the rescue bracelet sealing tube 2-4 is aluminum alloy or other metal sound-transmitting materials to ensure good sound-transmitting effect; the rechargeable battery 2-6 and the signal generation and processing circuit 2-7 are installed on the inner side of the transceiver-transmitter 2-5. The rescue bracelet sealing tube 2-4 and the rescue bracelet transparent end cover 2-8 are sealed with an O-ring.

[0067] like Figure 6 As shown, the transparent end cover 2-8 of the rescue bracelet is made of organic glass or other transparent hard materials, and a limited boss 2-9 is designed on the left side thereof, and a depth sensor 2-10, a charging input positive electrode 2-11 and a charging input negative electrode 2-12 are installed.

[0068] like Figure 7As shown, the top of the signal generation and processing circuit 2-7 is equipped with a power supply positive electrode 2-13, a power supply negative electrode 2-14, an LED display screen 2-17, and an infrared pair tube 2-18. After installation, the charging input positive electrode 2-11, the power supply positive electrode 2-13, and the battery positive electrode 2-15 are in a coaxial state, and the charging input negative electrode 2-12, the power supply negative electrode 2-14, and the battery negative electrode 2-16 are in a coaxial state. The signal generation and processing circuit 2-7 has a charge and discharge management unit. When charging, the current can flow from the charging input positive electrode 2-11 to the battery positive electrode 2-15. When discharging, the current can only flow from the battery positive electrode 2-15 to the power supply positive electrode 2-13. Similarly to the negative electrode, the charge and discharge management unit has a local unidirectional current limiting capability to ensure that when the rescue bracelet 2 is worn and used underwater, there will be no leakage current between the charging input positive electrode 2-11 and the charging input negative electrode 2-12, thereby ensuring the safety of electricity use.

[0069] like Figure 8 As shown, the signal generating and processing circuit 2-7 is also provided with an LED indicator light 2-19 and a magnetic induction switch 2-20. The front end of the magnetic induction switch 2-20 is 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 it is far away, the magnetic induction switch 2-20 is turned off. The non-contact advantage of magnetic induction is utilized to realize the user's operation information input, avoiding the dynamic sealing structure design.

[0070] like Fig. 9As shown, when the rescue bracelet 2 is worn on the water surface, the rescue bracelet 2 is charged through the charging contacts on the transparent end cover 2-8 of the rescue bracelet, and the GPS second pulse synchronization and configuration working mode are realized through the infrared pair tube 2-18. When the rescue bracelet 2 is worn underwater, the signal processing unit collects the signal input of the vital signs 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 signs monitoring module can monitor the heart rate, blood pressure and blood oxygen of the human body in real time, and judge whether an accident occurs to the underwater personnel by identifying whether the heart rate, blood pressure and blood oxygen of the human body have abnormal mutations. If a mutation occurs, a distress signal is automatically sent periodically, and the LED indicator 2-19 starts to flash. If it is triggered by mistake, the underwater personnel can release the rescue call through the button 2-2. The magnetic induction switch 2-20 can have multiple trigger modes such as single click, double click, triple click, and long press to represent different setting modes. The depth sensor 2-10 can measure the depth of the underwater personnel, and is used to inform the rescue personnel or monitoring personnel of the current water depth of the underwater personnel. The transceiver-in-one transducer 2-5 mostly works in the receiving state. The transceiver-in-one transducer passes the signal to the amplifying filter after passing through the transceiver converter to perform signal amplification and filtering. The A / D converter collects the input signal in real time, and the signal processing unit identifies and decodes the input signal to determine whether it is a valid signal. The command decoding result is displayed on the LED display 2-17 and the answer is automatically answered. The underwater personnel can also manually confirm the answer after receiving the command sent by the underwater position measurement device 1. When wearing the rescue bracelet 2 to send a signal or answer, the depth, heart rate, blood pressure and blood oxygen information collected will be encoded to form an underwater acoustic modulation signal, and then the analog modulation signal will be converted into a PWM digital modulation signal, and the signal will be amplified by a digital power amplifier. The transceiver-in-one transducer works in the transmitting mode, and finally the transmitting transducer is used to send the data to the underwater position measurement device 1, and the underwater position measurement device 1 transmits the information to the surface monitoring center for processing.

[0071] The wearing of the rescue bracelet 2 has an active position indication mode and an emergency rescue mode. The active position indication mode will send an acoustic pulse signal at a fixed time, and the acoustic pulse signal includes the user's depth, heart rate, blood pressure and blood oxygen information. The underwater position measurement device 1 can track and monitor the user in real time online. The emergency rescue mode is when the user encounters drowning or other accidents, by actively pressing the button 2-2 to trigger the rescue, or automatically triggering the rescue when it is determined that the human body's vital signs are abnormal. After the rescue call is triggered, the acoustic pulse signal is sent regularly, and no signal is sent at other times.

[0072] like Fig.10As shown, the rescue bracelet synchronization base 3 includes a rescue bracelet synchronization base cabin 3-1, a synchronization output and charging circuit 3-2, a charging output cathode 3-3, a charging output anode 3-4, an infrared pair tube 3-5, and a synchronization cable 3-7. The synchronization cable 3-7 on the rescue bracelet synchronization base cabin 3-1 is connected to the synchronization output and charging circuit 3-2, and then connected to the synchronization cable connector 4-1 to achieve charging, communication, and synchronization signal transmission. The synchronization output and charging circuit 3-2 is provided with a charging output cathode 3-3, a charging output anode 3-4, and an infrared pair tube 3-5, which are limited and error-proofed through the limiting groove 3-6 on the rescue bracelet synchronization base cabin 3-1 and the limiting boss 2-9 on the rescue bracelet 2 to form a Fig.11 As shown in the assembly effect, the charging output negative electrode 3-3 is connected to the charging input negative electrode 2-12, the charging output positive electrode 3-4 is connected to the charging input positive electrode 2-11, and the infrared pair tube 3-5 and the infrared pair tube 2-18 are opposite to each other in the center behind the transparent end cover 2-8 of the rescue bracelet.

[0073] The infrared pair tubes 3-5 and the infrared pair tubes 2-18 receive and transmit oppositely, and have full-duplex communication capability. They utilize the contactless information conduction capability to realize the transmission of data communication and GPS second pulse synchronization signals, reduce the information transmission contact design, thereby reducing the sealing design and improving the reliability of use.

[0074] like Fig.12 As shown, 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 and integrated configuration cable 4-4 is connected to the GPS device and the surface monitoring center. The synchronization cable connector 4-1 can be connected to the synchronization cable 3-7 of multiple rescue bracelet synchronization bases 3, and the multi-channel synchronization control circuit 4-3 can simultaneously synchronize the GPS second pulses of multiple rescue bracelets 2 and transmit the configuration information issued by the surface monitoring center.

[0075] When in use, the number of distress bracelets 2 actually used can be selected, and the underwater position measurement device 1 and the distress bracelet 2 can be synchronized and the working mode can be set through the multi-channel synchronization device 4. The synchronization can be set to a variety of timing synchronization modes such as 1s, 2s, and 3s. When the underwater position measurement device 1 and the distress bracelet 2 work in the active tracking mode, monitoring mode, and active position indication mode, respectively, the underwater position measurement device 1 will monitor the position, blood pressure, heart rate, and blood oxygen information sent by the distress bracelet 2 in real time, and carry out rescue operations in time when receiving distress information or discovering abnormal behavior. When the underwater position measurement device 1 and the distress bracelet 2 work in the emergency receiving mode and the emergency call mode, respectively, if the user triggers the distress signal of the distress bracelet 2, the underwater position measurement device 1 will trigger monitoring, start real-time monitoring of the distress bracelet 2, obtain the position, blood pressure, heart rate, and blood oxygen information of the distress bracelet 2, and carry out rescue operations in time.

[0076] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. An underwater emergency rescue support system, characterized in that include: The underwater position measurement device can receive the underwater acoustic communication status information sent by the rescue bracelet, measure the position information of the rescue bracelet, and feed it back to the surface monitoring center; There are multiple rescue bracelets, which are used to collect the wearer's physiological data and location information, and send the status and location information to the underwater position measurement device through underwater acoustic communication, and continue to communicate with the underwater position measurement device; There are multiple sync bases for the rescue bracelets, which are used to charge the rescue bracelets and realize GPS pulse-per-second synchronization; Multi-channel synchronization equipment, used to establish synchronization and communication between multiple distress bracelets, distress bracelet synchronization bases and the surface monitoring center; The surface monitoring center is connected to the multi-channel synchronization equipment and underwater position measurement equipment through watertight communication cables.

2. The underwater emergency rescue support system according to claim 1, characterized in that: The underwater position measuring equipment comprises: an ultra-short baseline array is installed on the outside of the left end cover of the watertight cylinder, and a signal acquisition and output processing circuit is installed on the inside of the left end cover of the watertight cylinder; a transmitting transducer is installed on the outside of the right end cover of the watertight cylinder and is vulcanized and connected to a watertight communication cable, and a battery is installed on the inside of the right end cover of the watertight cylinder; the watertight communication cable connects the signal acquisition and output processing circuit to a surface monitoring center; and the internal electronic components are sealed by the watertight cylinder and the left and right end covers of the watertight cylinder.

3. The underwater emergency rescue support system according to claim 2, characterized in that: The signal acquisition and output processing circuit has the function of receiving GPS second pulse synchronization, can actively transmit underwater acoustic coding signals, encodes the control commands issued by the surface monitoring center through the signal processing unit to form an underwater acoustic modulation signal, and then converts the analog modulation signal into a PWM digital modulation signal, amplifies the signal through a digital power amplifier, and uses a transmitting transducer to send the control command to the rescue bracelet, which can be used to urgently recall the personnel wearing the rescue bracelet or transmit work task commands.

4. The underwater emergency rescue support system according to claim 2 or 3, characterized in that: The ultra-short baseline array receives the status information sent by the rescue bracelet, performs A / D conversion after filtering and amplification processing, and the signal processing unit will perform data decoding processing on the received signal to calculate the depth, vital signs or distress signal sent by the rescue bracelet; at the same time, it will perform position calculation processing, use the ultra-short baseline positioning principle to calculate the relative position information of the rescue bracelet to itself, and then use the synchronous ranging technology to calculate the relative distance information of the rescue bracelet to itself, and finally use the attitude sensor data, geomagnetic sensor data, and GPS data to perform data fusion processing to obtain the final geographical coordinate position of the rescue bracelet.

5. The underwater emergency rescue support system according to claim 1, characterized in that: The underwater position measurement device includes two working modes: In active tracking and monitoring mode, the rescue bracelet will send location signals at regular intervals, and the underwater position measurement equipment will calculate the location information of the underwater personnel in real time and transmit it to the monitoring center; In emergency receiving mode, the distress bracelet will send a position-indicating signal only when a distress call is triggered, and the underwater position measurement device will trigger an early warning when it receives the distress signal.

6. The underwater emergency rescue support system according to claim 1, characterized in that: The rescue bracelet comprises: The base of the rescue bracelet is used to install the rescue bracelet sealing tube, and a vital sign monitoring module installation groove is hollowed out in the middle. The transceiver integrated transducer, the rechargeable battery, the signal generation and processing circuit and the transparent end cover of the rescue bracelet are installed in the rescue bracelet sealing tube in sequence. The rechargeable battery supplies power to the signal generation and processing circuit and the transceiver integrated transducer. The vital sign monitoring module is installed in the vital sign monitoring module installation groove facing the inner side of the bracelet. The button is set on the bottom side of the rescue bracelet and is connected to the signal generation and processing circuit. The transceiver integrated transducer is close to the inner wall of the rescue bracelet sealing tube, and the space between the transceiver integrated transducer and the inner wall is filled with sound-transmitting material. The rescue bracelet sealing tube is made of metal sound-transmitting material. The top of the signal generation and processing circuit is provided with a positive power supply electrode, a negative power supply electrode, an LED display screen, and an infrared pair tube; The signal generation and processing circuit collects the signal input of the vital sign monitoring module and the transceiver transducer in real time; The vital signs monitoring module can monitor the human heart rate, blood pressure and blood oxygen in real time. It can determine whether an accident has occurred to the underwater personnel by identifying whether there are abnormal changes in the human heart rate, blood pressure and blood oxygen. If there are sudden changes, a distress signal will be automatically sent periodically and the LED indicator will start flashing. If it is a false trigger, the underwater personnel can cancel the distress call by pressing a button. Most transceivers work in the receiving state. The transceiver passes the signal to the amplifying filter through the transceiver converter for signal amplification and filtering. The A / D converter collects the input signal in real time. The signal processing unit identifies and decodes the input signal to determine whether it is a valid signal. The command decoding result is displayed on the LED display and automatically responds. The underwater personnel can also manually confirm the response after receiving the command sent by the underwater position measurement equipment.

7. The underwater emergency rescue support system according to claim 6, characterized in that: When wearing a distress bracelet to send a signal or respond, the collected depth, heart rate, blood pressure and blood oxygen information will be encoded to form an underwater acoustic modulation signal, and then the analog modulation signal will be converted into a PWM digital modulation signal, and the signal will be amplified by a digital power amplifier. The transceiver transducer works in the transmitting mode, and finally the transmitting transducer is used to send the data to the underwater position measurement device, and the underwater position measurement device transmits the information to the surface monitoring center for processing; The wearable rescue bracelet has an active position indication mode and an emergency rescue mode; The active position indication mode will periodically send an acoustic pulse signal, which includes the user's depth, heart rate, blood pressure and blood oxygen information; The emergency call mode is when the user encounters drowning or other accidents, by actively pressing a button to trigger a call for help, or automatically triggering a call for help when it is determined that the human body's vital signs are abnormal. After the call for help is triggered, a sound pulse signal is sent at a fixed time, and no signal is sent at other times.

8. The underwater emergency rescue support system according to claim 6, characterized in that: The rescue bracelet synchronization base comprises: The synchronization cable on the synchronous base cabin of the rescue bracelet is connected to the synchronization output and charging circuit, and then connected to the synchronization cable connector to achieve charging, communication, and synchronization signal transmission; The synchronous output and charging circuit is provided with a charging output negative electrode, a charging output positive electrode and an infrared pair tube, and the limiting groove on the synchronous base cabin of the rescue bracelet is used to limit and prevent errors with the limiting boss on the rescue bracelet; The negative pole of the charging output is connected to the negative pole of the charging input, the positive pole of the charging output is connected to the positive pole of the charging input, and the infrared pair of tubes are separated by the transparent end cover of the rescue bracelet and the centers are opposite to each other; The receiving and transmitting of the infrared tubes are relative, with full-duplex communication capability, and the non-contact information conduction capability is used to realize data communication and the transmission of GPS second pulse synchronization signals; The multi-channel synchronization equipment includes a synchronization cable connector, a synchronization control box, a multi-channel synchronization control circuit, a GPS and a comprehensive configuration cable; The GPS and integrated configuration cables are connected to the GPS equipment and the surface monitoring center; the synchronization cable connector can be connected to the synchronization cables of multiple rescue bracelet synchronization bases, and the multi-channel synchronization control circuit can simultaneously synchronize the GPS second pulses of multiple rescue bracelets and transmit the configuration information issued by the surface monitoring center.

9. The underwater emergency rescue support system according to claim 6, characterized in that: The signal generation and processing circuit is also equipped with a magnetic induction switch. The front end of the magnetic induction switch is a button, and a strong magnet is installed inside the button. When the button is close to the magnetic induction switch, the magnetic induction switch is turned on. The magnetic induction switch can have multiple trigger modes such as single click, double click, triple click, long press, etc. to represent different setting modes.

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