Portable drowning rescue communication terminal and drowning detection method

Abstract

The invention discloses a portable drowning rescue communication terminal and a drowning detection method.The portable drowning rescue communication terminal comprises a main shell, the main shell is internally provided with a first cavity and a second cavity, the first cavity is internally provided with an antenna module, the second cavity is internally provided with a lithium battery and a PCB, and the lithium battery is connected with the PCB. The periphery of the first cavity is covered with a radome, the periphery of the second cavity is covered with an upper cover, and the front face of the upper cover is provided with an audible and visual alarm and a drowning sensor. The PCB is provided with a power supply module, an MCU module, and a key switch, an indicating lamp, a six-axis acceleration sensor, a GPS module and an SIM card which are electrically connected with the MCU module, and the audible and visual alarm, the drowning sensor and the antenna module are electrically connected with the MCU module. According to the portable drowning rescue communication terminal and the drowning detection method provided by the invention, an accurate real-time drowning position can be provided for a rescue party in time, and the rescue efficiency and the success rate are improved.

Description

Technical Field

[0001] The invention relates to a portable drowning rescue communication terminal and a drowning detection method. Background Art

[0002] At present, drowning accidents often occur in activities such as sailing, water sports and water tourism. However, because it is usually difficult for the drowning person to communicate effectively with the outside world, it becomes difficult to quickly carry out rescue work and accurately locate the person, which increases the risk and complexity of rescue and leads to casualties. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and propose a portable water rescue communication terminal and a water fall detection method, which can provide the rescue party with an accurate real-time water fall location in time, thereby improving the rescue efficiency and success rate.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] On one hand, the present invention provides a portable drowning rescue communication terminal, which includes a main housing, wherein a first cavity and a second cavity are arranged in the main housing, an antenna module is arranged in the first cavity, a lithium battery and a PCB board are arranged in the second cavity, the outer periphery of the first cavity is covered with an antenna cover, the outer periphery of the second cavity is covered with an upper cover, and an audible and visual alarm and a drowning sensor are arranged on the front of the upper cover;

[0006] The PCB board is provided with a power module, an MCU module, and a key switch, an indicator light, a six-axis acceleration sensor, a GPS module and a SIM card electrically connected to the MCU module; the sound and light alarm, the water fall sensor and the antenna module are all electrically connected to the MCU module; the lithium battery supplies power to the antenna module and the PCB board through the power module.

[0007] Further, the antenna module includes a B1 band antenna, an L band antenna, an S band antenna and an ANT integrated circuit, and the B1 band antenna, the L band antenna and the S band antenna are all electrically connected to the MCU module on the PCB board through the ANT integrated circuit;

[0008] The B1 frequency band antenna is used for high-precision positioning and navigation services, the L frequency band antenna is used for sending data and instructions, and the S frequency band antenna is used for receiving data and instructions.

[0009] Furthermore, the ANT integrated circuit includes a power module, an MCU, an overload protection, an overheat protection circuit, a battery and a data interface; the battery, the power module, the overheat protection circuit, and the MCU are electrically connected to form a loop, the MCU is electrically connected to a data interface, and the overheat protection circuit is electrically connected to an overload protection.

[0010] Furthermore, the radome is fixedly connected to the main shell, and a radome waterproof sealing gasket is provided at the connection between the radome and the main shell.

[0011] Furthermore, the upper cover is fixedly connected to the main shell, and a main shell waterproof sealing gasket is provided at the connection between the upper cover and the main shell.

[0012] Furthermore, buttons and indicator light display windows are provided on the front of the upper cover.

[0013] Furthermore, a waterproof SIM card slot is provided on the side wall of the upper cover.

[0014] Furthermore, EVA foam is arranged between the lithium battery and the PCB board.

[0015] Another aspect of the present invention provides a method for detecting a portable drowning rescue communication terminal, which comprises:

[0016] Step S1, when a drowning event occurs, the posture of the portable drowning rescue communication terminal changes suddenly, and the six-axis acceleration sensor analyzes and detects the sudden change data;

[0017] Step S2: The six-axis acceleration sensor measures the angular velocity ω of the portable drowning rescue communication terminal in the three directions of the X-axis, Y-axis and Z-axis. X ,ω Y ,ω Z ;

[0018] Step S3: After falling into water, the current and voltage data inside the water sensor suddenly change;

[0019] Step S4: filter the raw data of the sensor to remove interference and noise;

[0020] Step S5, process the filtered data and determine the MAX and MIN data;

[0021] Step S6: define time point t 0-1 ,t0,t 0+1 ;

[0022] Step S7: respectively obtain the time points of the portable drowning rescue communication terminal at time t. 0-1 ,t0,t 0+1 angular velocity data, generate an angular velocity waveform diagram in the X-axis direction, an angular velocity waveform diagram in the Y-axis direction, and an angular velocity waveform diagram in the Z-axis direction, and determine whether the portable drowning rescue communication terminal is at the time point t 0+1 Is the angular velocity data at time point t 0-1 and t0 within the angular velocity data threshold;

[0023] Step S8: respectively obtain the water fall sensor at time point t 0-1 ,t0,t 0+1 The voltage and current data are obtained, and a voltage and current waveform diagram is generated to determine whether the water sensor is at the time point t 0+1 Whether the voltage and current data are at time point t 0-1 and within the threshold of t0;

[0024] Step S9: respectively obtain the six-axis acceleration sensor at time point t 0-1 ,t0,t 0+1 Acceleration data and acceleration waveform are generated. It is determined that the six-axis acceleration sensor is at time point t 0+1 Is the acceleration data at time point t 0-1 and within the threshold of t0;

[0025] Step S10: If the angular velocity data, voltage and current data, and acceleration data exceed the threshold, the sending of a distress signal is automatically triggered, and the portable drowning rescue communication terminal performs an audible and visual alarm, and simultaneously sends the drowning person's location and trajectory information through the antenna module and SIM card.

[0026] Furthermore, the six-axis acceleration sensor includes a three-axis accelerometer and a three-axis gyroscope.

[0027] By adopting the above technical solution, the present invention realizes efficient and stable communication in the water environment through a waterproof shell, a built-in antenna module, an ANT integrated circuit, a water sensor, and a GPS module, provides the rescuer with an accurate real-time water location, and provides a more reliable and convenient communication means for water rescue operations, thereby improving the rescue efficiency and success rate. The antenna module design adopted by the present invention can realize efficient and stable signal transmission, ensuring real-time communication between rescue personnel and the command center.

[0028] Waterproof housing: can protect the device from water intrusion and ensure normal operation in humid or underwater environments.

[0029] Built-in antenna module: allows the device to receive and send signals. In scenarios such as water rescue, earthquake relief, and forest rescue, the built-in antenna module is used to receive Beidou signals to achieve precise positioning.

[0030] ANT integrated circuit: ensures effective connection between antenna module and wireless communication system, and optimizes signal transmission and reception.

[0031] Water fall sensor: It can detect when the user carrying the device falls into water, trigger the alarm mode, send a distress signal through the GPS module, and notify rescuers in time to improve rescue efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1It is a front view of the portable drowning rescue communication terminal of the present invention;

[0033] Figure 2 for Figure 1 Exploded diagram of

[0034] Figure 3 is a principle block diagram of the power module of the present invention;

[0035] Figure 4 This is a structural diagram of the portable drowning rescue communication terminal of the present invention;

[0036] Figure 5 It is a schematic diagram of angular velocity at different time points of the present invention;

[0037] Figure 6 It is a schematic diagram of the ANT integrated circuit of the present invention. DETAILED DESCRIPTION

[0038] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0039] Embodiment 1

[0040] like Figure 1 , 2 As shown, this embodiment provides a portable drowning rescue communication terminal, which includes a main housing 4, a first cavity and a second cavity are arranged in the main housing 4, an antenna module 2 is arranged in the first cavity, and a lithium battery 6 and a PCB board 8 are arranged in the second cavity. The periphery of the first cavity is covered with a radome 1, the radome 1 is fixedly connected to the main housing 4, and a radome waterproof sealing gasket 3 is arranged at the connection between the radome 1 and the main housing 4. The periphery of the second cavity is covered with an upper cover 13, the upper cover 13 is fixedly connected to the main housing 4, and a main housing waterproof sealing gasket 5 is arranged at the connection between the upper cover 13 and the main housing 4.

[0041] The sealing ring is made of nitrile rubber, which has excellent acid and alkali resistance and weather resistance, and can play a good role in sealing and waterproofing.

[0042] The antenna cover 1, the main shell 4 and the upper cover 13 are all made of PC+30GF, which has excellent structural mechanical properties. The whole machine has waterproof, dustproof and shockproof functions to improve the durability and reliability of the equipment.

[0043] like Figure 2 As shown, in this embodiment, EVA foam 7 is arranged between the lithium battery 6 and the PCB board 8 to play the role of insulation and reducing vibration impact.

[0044] like Figure 2As shown, the PCB board 8 of this embodiment is provided with a power module, an MCU module, a key switch 101 electrically connected to the MCU module, an indicator light 102, a six-axis acceleration sensor, a GPS module and a SIM card. The antenna module 2 is electrically connected to the MCU module, the GPS module is used to process the radio signal data such as signal transmission, reception, positioning, short messages, etc. of the antenna module 2, the SIM card is used to send a short message of the position information of the drowning person in real time, and the six-axis acceleration sensor is used to monitor the movement trajectory and posture of the drowning person.

[0045] Spraying the three-proof paint on the PCB board 8 will form a transparent protective film on its surface to prevent leakage, short circuit, waterproof and moisture-proof, and improve insulation strength.

[0046] The lithium battery 6 uses a 5000mAh rechargeable lithium battery 6, which provides continuous and stable power to the antenna module 2 and various electronic components in the PCB board 8 through the power module.

[0047] like Figure 2 As shown, the front side of the upper cover 13 of this embodiment is provided with a water fall sensor 11 , an audible and visual alarm 14 , a button 10 cooperating with a button switch 101 , and an indicator light display window 12 .

[0048] Three physical buttons 10 are arranged on the upper cover 13, and the functions are: power on / off, SOS emergency call, and return. The button 10 is made of silicone.

[0049] Four indicator lights are provided on the PCB board 8, namely: a power on / off indicator light, a data sending / receiving indicator light, a Beidou positioning indicator light, and a short message sending indicator light.

[0050] The water fall sensor 11 is electrically connected to the MCU module and is used to detect water immersion signals and determine whether a water fall event occurs.

[0051] The sound and light alarm 14 is electrically connected to the MCU module. When a fall into water occurs, the sound and light alarm 14 will emit a loud alarm and flash lights to facilitate rescue.

[0052] A waterproof SIM card slot 9 is provided on the side wall of the upper cover 13 for installing a Beidou communication SIM card.

[0053] The antenna module 2 of this embodiment includes a B1 band antenna, an L band antenna, an S band antenna and an ANT integrated circuit. The B1 band antenna, the L band antenna and the S band antenna are all electrically connected to the MCU module on the PCB board 8 through the ANT integrated circuit.

[0054] The B1 band antenna is used for high-precision positioning and navigation services, the L band antenna is used to send data and commands, and the S band antenna is used to receive data and commands.

[0055] B1 frequency band antenna 1559.05MHz-1563.15MHz, size: 15*15*4mm, material is ceramic, dielectric constant is DK50-DK60.

[0056] L-band antenna 1610MHz-1626.5MHz, size: 47*47*4mm, material is ceramic, dielectric constant is DK6-DK8.

[0057] S-band antenna 2483.5MHz-2500MHz, size: 30*30*4mm, material is ceramic, dielectric constant is DK7-DK9.

[0058] The surfaces of B1, L, S band antennas and ANT integrated circuits are sprayed with conformal coating to prevent oil, dust and moisture, and have excellent weather resistance.

[0059] like Figure 3 As shown, the power module of this embodiment outputs 3.3V and 5V DC voltages to power modules such as the Beidou GPS module, the six-axis acceleration sensor, the Beidou communication SIM card, the MCU module, the water sensor 11, the sound and light alarm 14, and the ANT integrated circuit of the antenna module 2.

[0060] like Figure 6 As shown, the ANT integrated circuit of this embodiment includes a power module, an MCU, an overload protection, an overheat protection circuit, a battery and a data interface; the battery, the power module, the overheat protection circuit and the MCU are electrically connected to form a loop, the MCU is electrically connected to a data interface, and the overheat protection circuit is electrically connected to an overload protection.

[0061] Power module: It is a key component in this device, providing stable voltage and current for MCU, antenna module and other circuit components.

[0062] The MCU mainly processes the communication signals of the antenna module, monitors and manages the overload protection and overheating protection circuits in the system, and ensures that the system can operate safely and stably.

[0063] Overload protection is mainly to prevent the equipment from being damaged due to excessive current during operation.

[0064] The overheat protection circuit is used to prevent the device from being damaged due to overheating. It monitors the temperature of key components such as the power module and MCU. When the temperature exceeds the safe range, it will reduce the power and shut down the device.

[0065] The battery provides stored electrical energy for the device. The power provided needs to be stabilized and filtered by the power module before being supplied to the MCU and antenna module.

[0066] The function of ANT integrated circuit is to ensure the effective connection between antenna module and wireless communication system and optimize signal transmission and reception.

[0067] Embodiment 2

[0068] This embodiment provides a method for detecting a fall into water based on the portable fall into water rescue communication terminal in Embodiment 1, which includes:

[0069] Step S1, the built-in accelerometer of the portable water rescue communication terminal determines the current posture according to the direction of gravity and the data of the accelerometer. When a water fall occurs, the posture of the portable water rescue communication terminal changes suddenly, and the six-axis acceleration sensor analyzes and detects the sudden change data. The six-axis acceleration sensor includes a three-axis accelerometer and a three-axis gyroscope, wherein the three-axis accelerometer is used to measure the linear acceleration of an object, and the three-axis gyroscope is used to measure the angular velocity of an object. By combining the measurement data of these two sensors, more accurate motion tracking and posture calculation can be achieved.

[0070] Step S2: The gyroscope in the six-axis acceleration sensor can measure the angular velocity ω of the portable drowning rescue communication terminal in the three directions of the X-axis, Y-axis, and Z-axis. X ,ω Y ,ω Z ,When a fall into water occurs, there may be rotational movements or rapid changes in ,the direction of sight, and the gyroscope in the six-axis acceleration sensor can detect these rotational ,movements and sudden changes in angular velocity.

[0071] Step S3: After falling into water, the current and voltage data inside the water sensor 11 suddenly change.

[0072] Step S4: filter the raw data from the sensor to remove interference and noise and improve the accuracy of the data.

[0073] Step S5, process the filtered data and determine the MAX and MIN data, where MAX is the t0-1 coordinate data and MIN is the t coordinate data.

[0074] Step S6: define time point t 0-1 ,t0,t 0+1 ,like Figure 5 shown.

[0075] Step S7: Obtain the portable drowning rescue communication terminal at time point t 0-1 ,t0,t 0+1 The angular velocity data is used to generate the angular velocity waveforms in the X-axis direction, the Y-axis direction and the Z-axis direction, and to determine the position of the portable drowning rescue communication terminal at the time point t. 0+1 Is the angular velocity data at time point t0-1 and t0 are within the angular velocity data threshold.

[0076] Step S8: Obtain the time points of the water sensor 11 at the time point t 0-1 ,t0,t 0+1 The voltage and current data are obtained and a voltage and current waveform is generated to determine whether the water sensor 11 is at the time point t 0+1 Whether the voltage and current data are at time point t 0-1 and within the threshold of t0.

[0077] Step S9: Obtain the six-axis acceleration sensors at time point t 0-1 ,t0,t 0+1 Acceleration data and acceleration waveform. Determine the six-axis acceleration sensor at time point t 0+1 Is the acceleration data at time point t 0-1 and within the threshold of t0.

[0078] Step S10: If the angular velocity data, voltage and current data, and acceleration data exceed the threshold, the sending of a distress signal is automatically triggered, and the portable drowning rescue communication terminal performs an audible and visual alarm, and simultaneously sends the drowning person's location and trajectory information through the antenna module 2 and the SIM card.

[0079] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable water rescue communication terminal, characterized in that: It comprises a main shell (4), wherein a first cavity and a second cavity are arranged in the main shell (4), an antenna module (2) is arranged in the first cavity, a lithium battery (6) and a PCB board (8) are arranged in the second cavity, the outer periphery of the first cavity is covered with a radome (1), the outer periphery of the second cavity is covered with an upper cover (13), and an audible and visual alarm (14) and a water fall sensor (11) are arranged on the front of the upper cover (13); The PCB board (8) is provided with a power module, an MCU module, a key switch (101) electrically connected to the MCU module, an indicator light (102), a six-axis acceleration sensor, a GPS module and a SIM card; the sound and light alarm (14), the water fall sensor (11) and the antenna module (2) are all electrically connected to the MCU module; and the lithium battery (6) supplies power to the antenna module (2) and the PCB board (8) through the power module.

2. The portable water rescue communication terminal according to claim 1, characterized in that: The antenna module (2) comprises a B1 frequency band antenna, an L frequency band antenna, an S frequency band antenna and an ANT integrated circuit, and the B1 frequency band antenna, the L frequency band antenna and the S frequency band antenna are all electrically connected to the MCU module on the PCB board (8) via the ANT integrated circuit; The B1 frequency band antenna is used for high-precision positioning and navigation services, the L frequency band antenna is used for sending data and instructions, and the S frequency band antenna is used for receiving data and instructions.

3. The portable water rescue communication terminal according to claim 2, characterized in that: The ANT integrated circuit includes: a power module, an MCU, an overload protection, an overheat protection circuit, a battery and a data interface; the battery, the power module, the overheat protection circuit and the MCU are electrically connected to form a loop, the MCU is electrically connected to a data interface, and the overheat protection circuit is electrically connected to an overload protection.

4. The portable water rescue communication terminal according to claim 1, characterized in that: The radome (1) is fixedly connected to the main shell (4), and a radome waterproof sealing gasket (3) is provided at the connection between the radome (1) and the main shell (4).

5. The portable water rescue communication terminal according to claim 1, characterized in that: The upper cover (13) is fixedly connected to the main shell (4), and a main shell waterproof sealing gasket (5) is provided at the connection between the upper cover (13) and the main shell (4).

6. The portable drowning rescue communication terminal according to claim 5, characterized in that: The front side of the upper cover (13) is provided with a button (10) and an indicator light display window (12).

7. The portable water rescue communication terminal according to claim 5, characterized in that: A waterproof SIM card slot (9) is provided on the side wall of the upper cover (13).

8. The portable drowning rescue communication terminal according to claim 1, characterized in that: An EVA foam (7) is arranged between the lithium battery (6) and the PCB board (8).

9. A method for detecting a portable drowning rescue communication terminal according to any one of claims 1 to 8, characterized in that: It includes: Step S1, when a drowning event occurs, the posture of the portable drowning rescue communication terminal changes suddenly, and the six-axis acceleration sensor analyzes and detects the sudden change data; Step S2: The six-axis acceleration sensor measures the angular velocity ω of the portable drowning rescue communication terminal in the three directions of the X-axis, Y-axis and Z-axis. X ,ω Y ,ω Z ; Step S3: After falling into water, the current and voltage data inside the water sensor (11) suddenly change; Step S4, filtering the raw data of the water falling sensor to remove interference and noise; Step S5, process the filtered data and determine the MAX and MIN data, where MAX is the t0-1 coordinate data and MIN is the t coordinate data; Step S6: define time point t 0-1 ,t0,t 0+1 ; Step S7: respectively obtain the time points of the portable drowning rescue communication terminal at time t. 0-1 ,t0,t 0+1 angular velocity data, generate an angular velocity waveform diagram in the X-axis direction, an angular velocity waveform diagram in the Y-axis direction, and an angular velocity waveform diagram in the Z-axis direction, and determine whether the portable drowning rescue communication terminal is at the time point t 0+1 Is the angular velocity data at time point t 0-1 and t0 within the angular velocity data threshold; Step S8: respectively obtain the water fall sensor (11) at time point t 0-1 ,t0,t 0+1 The voltage and current data are obtained, and a voltage and current waveform diagram is generated to determine whether the water falling sensor (11) is at the time point t 0+1 Whether the voltage and current data are at time point t 0-1 and within the threshold of t0; Step S9: respectively obtain the six-axis acceleration sensor at time point t 0-1 ,t0,t 0+1 Acceleration data and acceleration waveform are generated. It is determined that the six-axis acceleration sensor is at time point t 0+1 Is the acceleration data at time point t 0-1 and within the threshold of t0; Step S10: If the angular velocity data, voltage and current data, and acceleration data exceed the threshold, the sending of a distress signal is automatically triggered, and the portable drowning rescue communication terminal performs an audible and visual alarm, and simultaneously sends the drowning person's location and trajectory information through the antenna module (2) and the SIM card.

10. The method for detecting falling into water according to claim 9, characterized in that: The six-axis acceleration sensor includes a three-axis accelerometer and a three-axis gyroscope.

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