Wearable terminal for warship member positioning rescue, positioning rescue system and positioning rescue method

Abstract

The invention provides a wearable terminal for warship member positioning rescue, and relates to the technical field of overwater emergency rescue. The wearable terminal for warship crew positioning rescue comprises a main control unit, and a first positioning module, a second positioning module, a communication module and an acceleration sensing module which are electrically connected with the main control unit, the first positioning module is used for positioning calculation of the wearable terminal in a cabin of a naval vessel; the second positioning module is used for positioning calculation of the wearable terminal on the deck of the naval vessel and after falling into water; the communication module is used for data communication between the wearable terminal and the ship-borne gateway; the acceleration sensing module is used for determining whether the wearable terminal falls or not. According to the wearable terminal for warship member positioning rescue, two positioning technologies with complementary advantages and the communication module are applied to positioning and rescue, effective alarm communication is guaranteed, and warship member falling information is obtained in real time through the acceleration sensor. On the basis, the invention further provides a warship member positioning rescue system and a warship member positioning rescue method.

Description

Technical Field

[0001] The present invention relates to the technical field of water emergency rescue. Specifically, it relates to a wearable terminal for crew positioning and rescue, a positioning and rescue system, and a positioning and rescue method. Background Art

[0002] Currently, the shipborne personnel positioning and fallen personnel alarm devices or systems developed by naval equipment research institutions and equipment manufacturers have effectively ensured the safety of personnel in maritime operations to a certain extent. Most of their solutions are to use GPS positioning technology and Bluetooth communication technology on the life-saving equipment worn by officers and soldiers to achieve short-distance transmission of the position information of shipborne personnel and improve the auxiliary self-rescue ability of fallen personnel.

[0003] However, since the average speed of a ship is usually 20 - 25 knots, and the speed is even greater during combat or exercises. If a personnel falling into the water incident occurs, the distance traveled in one minute of continuous navigation has exceeded the Bluetooth communication range, making it impossible to form an effective alarm communication and provide the dynamic position information of the person in the water; and the GPS positioning technology also has problems such as not meeting the requirements of information innovation, and cannot guarantee the timeliness of maritime rescue for fallen personnel. Summary of the Invention

[0004] The purpose of the present invention is to provide a wearable terminal for crew positioning and rescue, a positioning and rescue system, and a positioning and rescue method, which helps to solve the above technical problems.

[0005] The present invention is implemented as follows:

[0006] A wearable terminal for crew positioning and rescue includes a main control unit and a first positioning module, a second positioning module, a communication module, and an acceleration sensing module electrically connected to the main control unit; the first positioning module is used for positioning calculation of the wearable terminal in the cabin of the ship; the second positioning module is used for positioning calculation of the wearable terminal on the deck of the ship and after falling into the water; the communication module is used for data communication between the wearable terminal and the shipborne gateway; the acceleration sensing module is used to determine whether the wearable terminal is in a falling state.

[0007] Furthermore, the first positioning module is a Bluetooth positioning module. Its technical effect lies in that: thanks to the development of Bluetooth technology, based on the new indoor positioning framework of Bluetooth RSSI power technology, it has become increasingly accurate and simple to calculate indoor positioning using Bluetooth technology. Moreover, Bluetooth devices have low production costs, low installation and maintenance costs, low power consumption, and fast calculation response speeds. Currently, it can almost achieve a real-time indoor positioning accuracy of 1 meter.

[0008] Further, the second positioning module is a Beidou positioning module. Its technical effect is that: the Beidou positioning technology is becoming increasingly mature, with a wide communication range, strong connection ability, and continuous positioning and speed measurement functions, which can meet the requirements of domestic information and innovation, and ensure the continuity and accuracy of the outdoor positioning of ship crew members.

[0009] Further, the communication module is a LoRa communication module. Its technical effect is that: the LoRa communication module belongs to the low-power local area network wireless communication standard. Its biggest feature is that it can transmit farther than other wireless methods under the same power consumption conditions, realizing the unity of low power consumption and long distance. This provides strong guarantee for the information communication in the case of shipboard personnel falling into the water.

[0010] Further, an alarm button is also provided; the alarm button is electrically connected to the main control unit and is used for ship crew members to manually trigger the rescue alarm. Its technical effect is that: the manual alarm button cooperates with the automatic acceleration sensing module to avoid the error of mechanical calculation and also enhances the confidence of shipboard personnel in obtaining rescue after self-triggering the alarm.

[0011] Further, a physical sign detection module is also provided; the physical sign detection module is electrically connected to the main control unit and is used to measure the immediate physical health status of ship crew members. Its technical effect is that: the commonly mentioned vital signs mainly include heart rate, pulse, blood pressure, respiration, pain, blood oxygen, pupil and corneal reflex changes, etc. The physical sign detection module set for ship crew members falling into the water mainly measures the heart rate, pulse, blood pressure, respiration, blood oxygen, etc. of ship crew members, providing medical rescue information for the rescue.

[0012] A positioning and rescue system includes a Bluetooth base station and the above-mentioned wearable terminal for ship crew member positioning and rescue; the Bluetooth base station is radio-connected to the first positioning module.

[0013] Further, the positioning and rescue system is also provided with a LoRa gateway; the LoRa gateway is radio-connected to the communication module. Its technical effect is that: the LoRa gateway is set on the hull and can provide real-time rescue communication information and send control instructions for ship management personnel.

[0014] Further, the positioning and rescue system is also provided with a Beidou data transmission; the Beidou data transmission is radio-connected to the second positioning module. Its technical effect is that: the Beidou data transmission is set on the ship island and can locate the position of ship crew members on the deck and after falling into the water.

[0015] A positioning and rescue method includes: when a crew member is in a cabin, the first positioning module and the Bluetooth base station continuously perform indoor positioning on the crew member; when the crew member is on the deck, the communication module sends the positioning information to the LoRa gateway; when the crew member falls into the water, the acceleration sensing module obtains the falling information of the crew member and triggers the main control unit to send an alarm to the LoRa gateway through the communication module; after the crew member falls into the water, the second positioning module and the satellite continuously perform outdoor positioning on the crew member and send data information to the LoRa gateway through the communication module.

[0016] Further, when the crew member falls into the water, the crew member can also manually send an alarm through the alarm button; the vital sign detection module continuously measures the crew member and sends the measurement results to the main control unit. The technical effect is that the crew member taking the initiative to send an alarm enhances their confidence in self-rescue and being rescued, avoids losses caused by malfunctions of the acceleration sensor, and the continuous measurement of vital signs provides a medical assistance basis for rescue personnel.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The wearable terminal, positioning and rescue system, and positioning and rescue method for crew member positioning and rescue apply two complementary positioning technologies and the communication module to positioning and rescue, and use the acceleration sensor to obtain the falling information of the crew member in real time, ensuring effective alarm communication and timely providing the dynamic position information of the person falling into the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is the structural decomposition diagram of the wearable terminal for crew member positioning and rescue provided by the present invention;

[0021] Figure 2 It is the flowchart of the crew member positioning and rescue method provided by the present invention.

[0022] Icons: 1 - Step 1; 2 - Step 2; 3 - Step 3; 4 - Step 4; 100 - Main control unit; 200 - First positioning module; 300 - Second positioning module; 400 - Communication module; 500 - Acceleration sensing module; 600 - Alarm button. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and labeled in the accompanying drawings can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0030] Figure 1 The following is a structural decomposition diagram of the wearable terminal for ship crew positioning and rescue provided by the present invention. As Figure 1 shown, this embodiment provides a wearable terminal for ship crew positioning and rescue, including a main control unit 100 and a first positioning module 200, a second positioning module 300, a communication module 400, and an acceleration sensing module 500 that are electrically connected to the main control unit 100.

[0031] Among them, the first positioning module 200 is used for positioning calculation of the wearable terminal in the cabin of the ship; the second positioning module 300 is used for positioning calculation of the wearable terminal on the deck of the ship and after falling into the water; the communication module 400 is used for data communication between the wearable terminal and the shipborne gateway; the acceleration sensing module 500 is used to determine whether the wearable terminal is in a falling state.

[0032] In an alternative solution of the above embodiment, as Figure 1 shown, further, the first positioning module 200 is a Bluetooth positioning module. In the design of this embodiment, thanks to the development of Bluetooth technology, a new indoor positioning framework based on Bluetooth RSSI power technology makes it increasingly accurate and simple to calculate indoor positioning using Bluetooth technology. Moreover, Bluetooth devices have low production costs, low installation and maintenance costs, low power consumption, and fast calculation response speeds. Currently, it can almost achieve a real-time indoor positioning accuracy of 1 meter.

[0033] Specifically, an nRF52840 chip module is deployed inside the wearable terminal for ship crew positioning and rescue. This chip module continuously broadcasts its own signal through Bluetooth technology and receives signals sent by other modules. The broadcast signal strength data is sent to the central controller through wireless transmission. After the central controller collects the signal strength data sent by all modules, it uses the triangulation algorithm to calculate the target position. By comparing the signal strength differences between different modules and their relative position relationships, the coordinates of the target position can be determined. Finally, the calculated target position information is fed back to the user to achieve the indoor positioning function.

[0034] In an alternative solution of the above embodiment, as Figure 1 shown, further, the second positioning module 300 is a Beidou positioning module. In the design of this embodiment, Beidou positioning technology is becoming increasingly mature, with a wide communication range, strong connection ability, and continuous positioning and speed measurement functions, which can meet the requirements of domestic information and communication innovation and ensure the continuity and accuracy of ship crew outdoor positioning.

[0035] Specifically, the AT6558R chip module is integrated into the wearable terminal for ship crew positioning and rescue. This module is built with a Beidou RNSS receiver. Configure the parameters of the AT6558R chip module according to the positioning requirements, including the receiving frequency, navigation message format, etc. During the positioning process, the AT6558R chip module receives the navigation signals sent by Beidou satellites and calculates the position information of the device through signal processing algorithms. The positioning result can be transmitted to the shipboard LoRa gateway via LoRa to achieve the positioning function.

[0036] Among them, there are two types of satellite radio services for positioning. One is the satellite radio navigation service, with the English full name Radio Navigation Satellite System, abbreviated as RNSS. The user receives satellite radio navigation signals and independently completes the distance measurement to at least 4 satellites to calculate the user's position, speed, and navigation parameters. The other is the satellite radio determination service, with the English full name Radio Determination Satellite Service, abbreviated as RDSS. The distance measurement from the user to the satellite and the position calculation cannot be independently completed by the user himself and must be completed by an external system through the user's response. Its feature is that through the user's response, while completing the positioning, the user's position report to the external system is completed, and the integration of positioning and communication can also be realized to achieve NAVCOMM integration in the same system.

[0037] In an alternative solution of the above embodiment, as Figure 1 shown, further, the communication module 400 is a LoRa communication module. In the design of this embodiment, the LoRa communication module belongs to the low-power local area network wireless communication standard. Its biggest feature is that it can spread farther than other wireless methods under the same power consumption conditions, achieving the unity of low power consumption and long distance. This provides a strong guarantee for information communication in the case of shipboard personnel falling into the water.

[0038] Specifically, the ASR6601 chip module is integrated into the wearable terminal for ship crew positioning and rescue. This module is built with LoRa communication parameters, including frequency, bandwidth, spreading factor, etc. During the communication process, the ASR6601 chip module communicates with other devices through LoRa technology to achieve two-way data transmission. During the communication process, technologies such as adaptive data rate (ADR) can be used to optimize the communication quality and power consumption.

[0039] In an alternative solution of the above embodiment, as Figure 1As shown in the figure, further, an alarm button 600 is also provided; the alarm button 600 is electrically connected to the main control unit 100 and is used for crew members to manually trigger a rescue alarm. In the design of this embodiment, the manual alarm button 600 and the automatic acceleration sensing module 500 cooperate with each other to avoid errors in mechanical calculations and also enhance the confidence of shipboard personnel in obtaining assistance after self-triggering the alarm.

[0040] For the acceleration sensing module 500 corresponding to the manual alarm button 600, an ADXL345 sensor module is integrated in the wearable terminal for crew member positioning and rescue, and parameters such as the sensitivity and sampling rate of the sensor module are configured to adapt to different application scenarios. During the fall detection process, the ADXL345 sensor module continuously collects the acceleration data of the object and transmits it to the processing unit through the interface. The processing unit processes and analyzes the received data according to the preset fall determination algorithm to determine whether a fall event has occurred. If a fall event occurs, the main control unit 100 can trigger an alarm, record data, or take other corresponding measures.

[0041] In an alternative solution of the above embodiment, as Figure 1 shown in the figure, further, the wearable terminal for crew member positioning and rescue is also provided with a physical sign detection module; the physical sign detection module is electrically connected to the main control unit 100 and is used for measuring the immediate physical health status of the crew member. In the design of this embodiment, the so-called vital signs mainly include heart rate, pulse, blood pressure, respiration, pain, blood oxygen, pupil and corneal reflex changes, etc. The physical sign detection module set for the rescue of crew members falling into the water mainly measures the heart rate, pulse, blood pressure, respiration, blood oxygen, etc. of the crew member to provide medical rescue information for the rescue.

[0042] Specifically, a GH3018 sensor module is integrated in the wearable terminal for crew member positioning and rescue, and the parameters of the sensor module are configured, including the sampling frequency, test mode, etc. During the physical sign test process, the GH3018 sensor module continuously collects the physiological signal data of the user, such as heart rate, blood oxygen saturation, etc., and transmits it to the processing unit through the interface. The processing unit processes and analyzes the received data according to the preset algorithm to obtain the physical sign test result of the user.

[0043] A positioning and rescue system includes a Bluetooth base station and the above-mentioned wearable terminal for crew member positioning and rescue; the Bluetooth base station is radio-connected to the first positioning module. The Bluetooth base station of this embodiment is arranged in the cabin and can locate the position of the crew member in the cabin.

[0044] In an alternative solution of the above embodiment, further, the positioning and rescue system is also provided with a LoRa gateway; the LoRa gateway is radio-connected to the communication module. In this embodiment, the LoRa gateway is arranged on the hull and can provide real-time rescue communication information and issue control instructions for ship management personnel.

[0045] In the optional solution of the above embodiment, the positioning and rescue system is further provided with a Beidou digital transmitter, which is radio-connected to the second positioning module. In this embodiment, the Beidou digital transmitter is arranged on the ship island, and can locate the position of the crew on the deck and after falling into the water.

[0046] Figure 2 The flowchart of the crew positioning and rescue method provided by the present invention is as follows. Figure 2 As shown, a positioning and rescue method includes: when the crew is in the cabin, the first positioning module 200 and the Bluetooth base station continuously perform indoor positioning of the crew; when the crew is on the deck, the communication module 400 sends the positioning information to the LoRa gateway; when the crew falls into the water, the acceleration sensing module 500 obtains the crew's falling information and triggers the main control unit 100 to alarm the LoRa gateway through the communication module 400; after the crew falls into the water, the second positioning module 300 and the satellite continuously perform outdoor positioning of the crew, and send data information to the LoRa gateway through the communication module 400.

[0047] In the optional scheme of the above embodiment, further, when the crew falls into the water, the crew can also manually sound an alarm through the alarm button 600; the vital sign detection module continuously measures the crew and sends the measurement results to the main control unit 100. In the design of this embodiment, the crew's active alarm increases their confidence in self-rescue and being rescued, avoids losses caused by malfunction of the acceleration sensor, and the continuous measurement of vital signs provides medical assistance basis for rescuers.

[0048] In summary, the wearable terminal for crew positioning and rescue mainly includes indoor positioning function, outdoor positioning function, maritime communication function, vital signs detection function, fall detection function and basic display interface function. Its working logic is as follows:

[0049] Status ① (crew members are in the cabin):

[0050] When the crew is moving in the cabin, the indoor positioning function, i.e. the first positioning module 200, is turned on, and the Bluetooth RSSI positioning tag in the terminal is in working state, sending signals to the indoor Bluetooth base station at a frequency of 10s / time. At the same time, the acceleration sensing module 500 is in working state, detecting the crew's falling state in low power consumption mode. Other functional modules are in dormant state.

[0051] Status ② (crew members on deck):

[0052] When the crew is on the deck, the outdoor power detection function is turned on, and the LoRa communication module 400 and the satellite positioning module in the terminal are in heartbeat working mode, sending signals to the shipborne gateway and Beidou satellite GNSS with a heartbeat cycle of 1 hour.

[0053] Status ③ (when a crew member falls into the water):

[0054] When a crew member falls into the water, the crew member can manually trigger the main control chip through the alarm button 600 on the terminal. At the same time, the acceleration sensing module 500 can automatically trigger the main control unit 100 through high-precision drop detection, and start the water rescue working circuit in a dual-mode of manual and automatic protection. The LoRa communication module 400 in the terminal reports the water falling event alarm to the shipborne gateway in the first time. At the same time, the satellite positioning module in the terminal enters the hot start mode for outdoor positioning.

[0055] Status ④ (after a crew member falls into the water):

[0056] After the crew member floats in the sea after falling into the water, both the satellite positioning module and the LoRa communication module 400 in the terminal continuously supplement the positioning information at a frequency of 5 s / time and package the position information to complete the alarm.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A wearable terminal for crew positioning and rescue, characterized in that: It comprises a main control unit (100), a first positioning module (200), a second positioning module (300), a communication module (400) and an acceleration sensing module (500) electrically connected to the main control unit (100); The first positioning module (200) is used for positioning calculation of the wearable terminal in the cabin of a ship; the second positioning module (300) is used for positioning calculation of the wearable terminal on the deck of the ship and after falling into the water; the communication module (400) is used for data communication between the wearable terminal and the shipborne gateway; and the acceleration sensing module (500) is used to determine whether the wearable terminal is in a falling state.

2. The wearable terminal for crew positioning and rescue according to claim 1 is characterized in that: The first positioning module (200) is a Bluetooth positioning module.

3. The wearable terminal for crew positioning and rescue according to claim 1, characterized in that: The second positioning module (300) is a Beidou positioning module.

4. The wearable terminal for crew positioning and rescue according to claim 1, characterized in that: The communication module (400) is a LoRa communication module (400).

5. The wearable terminal for crew positioning and rescue according to claim 1, characterized in that: An alarm button (600) is also provided; the alarm button (600) is electrically connected to the main control unit (100) and is used by the crew to manually trigger a rescue alarm.

6. The wearable terminal for crew positioning and rescue according to claim 1, characterized in that: A vital sign detection module is also provided; the vital sign detection module is electrically connected to the main control unit (100) and is used to measure the immediate physical health status of the crew.

7. A positioning rescue system, characterized in that: It comprises a Bluetooth base station and a wearable terminal for crew positioning and rescue as claimed in any one of claims 1 to 6; the Bluetooth base station is radio-connected to the first positioning module (200).

8. The positioning rescue system according to claim 7, characterized in that: The positioning rescue system is also provided with a LoRa gateway; the LoRa gateway is connected to the communication module (400) by radio.

9. The positioning rescue system according to claim 7, characterized in that: The positioning and rescue system is also provided with a Beidou data transmitter; the Beidou data transmitter is connected to the second positioning module (300) by radio.

10. A positioning rescue method, characterized in that: include: When the crew is in the cabin, the first positioning module (200) and the Bluetooth base station continuously perform indoor positioning on the crew; When the crew is on the deck, the communication module (400) sends the positioning information to the LoRa gateway; When a crew member falls into the water, the acceleration sensing module obtains the crew member's falling information and triggers the main control unit (100) to send an alarm to the LoRa gateway through the communication module (400); When the crew falls into the water, the second positioning module (300) and the satellite continue to perform outdoor positioning on the crew, and send data information to the LoRa gateway through the communication module (400).

11. The positioning rescue method according to claim 10, characterized in that: When a crew member falls into the water, the crew member can also manually sound an alarm through the alarm button (600); the vital signs detection module continuously measures the vital signs of the crew member and sends the measurement results to the main control unit (100).

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