Position information transmission device and rescue system

Abstract

The utility model provides a position information transmission device and a rescue system. The device comprises a positioning unit used for acquiring current position information; the narrowband communication unit is used for establishing a communication link with a command terminal of a command center, sending the current position information to the command terminal of the command center through the communication link, and receiving feedback information sent by the command terminal of the command center; the optical display unit is electrically connected with the narrowband communication unit, emits visible light and can display the communication state between the narrowband communication unit and the command terminal; the driving unit is used for pushing the position information transmission device to the air; the air hanging unit is used for providing resistance in the falling process of the position information transmission device, and the falling time of the position information transmission device is prolonged. According to the utility model, terrain obstacles can be overcome, and emergency rescue can be implemented more quickly.

Description

Technical Field

[0001] The present application relates to the field of emergency rescue, and in particular to a location information transmission device and a rescue system. Background Art

[0002] During emergency rescue operations, rapid communication with the outside world—in order to quickly inform the outside world of one's location and situation—is essential for prompt rescue efforts. Currently, the main methods used in emergency rescue include satellite short message communication and ground-based narrowband communication. Satellite short message communication uses a satellite communication transmitter to send a short message signal, which is then decoded by a receiver in the backend to detect the distress signal. While satellite short message communication equipment can provide long-range communication coverage, its communication link is significantly affected by factors such as weather and terrain. In complex terrain, particularly dense forests or towering mountains, satellite signals often struggle to transmit reliably, leading to communication failures. Furthermore, satellite short message communication is inefficient, and the communication system requires complex installation and operation. Ground-based narrowband communication utilizes ground-based narrowband communication technology, transmitting data through ground base stations. This method is often used for longer-distance communication, but its transmission range and stability are significantly limited in dense vegetation or complex terrain. While some positioning and distress call devices are currently available on the market, most rely on ground base stations or limited satellite signals, and still suffer from the aforementioned drawbacks. Utility Model Content

[0003] In order to solve one of the above technical problems, the utility model provides a position information transmission device and a rescue system.

[0004] A first aspect of an embodiment of the present invention provides a device for transmitting location information, the device comprising:

[0005] The housing internally carries a positioning unit, a narrowband communication unit, an optical display unit, a driving unit, a hovering unit, and a power supply unit;

[0006] A positioning unit, used to obtain current location information;

[0007] a narrowband communication unit, configured to establish a communication link with a command terminal of a command center, send the current location information to the command terminal of the command center via the communication link, and receive feedback information sent by the command terminal of the command center;

[0008] an optical display unit electrically connected to the narrowband communication unit to emit visible light, the optical display unit being configured with a plurality of first optical display modes, each of the first optical display modes corresponding to a communication state between the narrowband communication unit and a command terminal of the command center;

[0009] A driving unit, configured to push the position information transmitting device into the air;

[0010] A suspension unit, configured to provide resistance during the falling process of the position information transmitting device, thereby extending the falling time of the position information transmitting device;

[0011] A power supply unit is used to supply power to the positioning unit, the narrowband communication unit, the optical display unit, the driving unit and the hovering unit.

[0012] Preferably, the narrowband communication unit is also used to receive interpretation information sent by an external handheld terminal, and the narrowband communication unit packages the current location information and interpretation information, encrypts them, and sends them to the command terminal of the command center, and receives feedback information sent by the command terminal of the command center, decrypts them, and sends them to the external handheld terminal.

[0013] Preferably, the optical display unit includes a plurality of LED lamp beads, the plurality of LED lamp beads emit visible light, and the plurality of LED lamp beads are arranged in a matrix.

[0014] Preferably, the driving unit includes a jet assembly, in which compressed gas is installed. The compressed gas is released and expanded to generate thrust, thereby driving the position information transmission device to move in the air.

[0015] Preferably, the suspension unit includes a parachute assembly, which is deployed when the position information transmitting device reaches a predetermined height. During the falling process of the position information transmitting device, the parachute assembly provides resistance for the position information transmitting device.

[0016] Preferably, the power supply unit is a rechargeable battery or a detachable disposable dry cell battery.

[0017] Preferably, the position information transmission device also includes a trigger unit and a control unit, the trigger unit is electrically connected to the control unit, and the control unit is electrically connected to the optical display unit, the driving unit and the hovering unit respectively, the trigger unit receives a first trigger instruction and sends it to the control unit, the control unit controls the driving unit to push the position information transmission device into the air in response to the first trigger instruction, and controls the driving unit to stop when the position information transmission device reaches a predetermined height, and controls the hovering unit to work at the same time, the trigger unit receives a second trigger instruction and sends it to the control unit, the optical display unit is also configured with multiple second optical display modes, and the control unit controls the optical display unit to present the second optical display mode corresponding to the trigger instruction in response to the second trigger instruction.

[0018] The second aspect of an embodiment of the present invention provides a rescue system, which includes a handheld terminal, a command terminal and the position information transmission device described in the first aspect of the embodiment of the present invention, the handheld terminal is wirelessly connected to the position information transmission device, the command terminal is configured in a command center, and the position information transmission device and the command terminal establish a communication link through the narrowband communication unit.

[0019] The beneficial effects of the present invention are as follows: the positioning unit in the present invention obtains the current position information, and the narrowband communication unit is used to establish a communication link with the command terminal of the command center in the air to avoid the complex and changeable ground environment and communicate with the command center in a relatively open air, thereby overcoming terrain obstacles and implementing emergency rescue more quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the position information transmission device described in Example 1 of the present utility model;

[0022] Figure 2 This is a schematic diagram of the principle of the position information transmission device described in Example 1 of the present utility model;

[0023] Figure 3 This is another schematic diagram of the principle of the position information transmission device described in Example 1 of the present utility model;

[0024] Figure 4 This is a schematic diagram of the principles of the rescue system described in Example 2 of the present utility model. DETAILED DESCRIPTION

[0025] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0026] Example 1

[0027] like Figure 1 and Figure 2As shown, this embodiment provides a position information transmission device that can be used in emergency rescue scenarios with complex terrain. The position information transmission device includes a positioning unit, a narrowband communication unit, an optical display unit, a drive unit, a hovering unit, and a power supply unit. The positioning unit, narrowband communication unit, optical display unit, drive unit, hovering unit, and power supply unit are all centrally disposed within a housing.

[0028] Specifically, in this embodiment, the housing serves as a bearing component and can effectively protect the positioning unit, narrowband communication unit, optical display unit, driving unit, hovering unit, and power supply unit deployed therein.

[0029] The positioning unit is highly accurate, supports satellite positioning systems, and features compatible real-time differential positioning, providing sub-meter accuracy and making it suitable for emergency positioning and search and rescue operations. It can be implemented using either a GPS chip or a Beidou chip. After receiving satellite signals, the positioning unit calculates the current location in real time, including geographic parameters such as longitude, latitude, and altitude that characterize the current position. This current location information is encoded into a digital signal and transmitted externally via the narrowband communication unit.

[0030] The narrowband communication unit can be implemented using low-power wide area network (LPWAN) technology, offering a long signal transmission distance of several kilometers to over ten kilometers. In this embodiment, the narrowband communication unit supports spectrum adaptation technology, automatically adjusting the operating frequency band in varying signal environments to ensure stable signal transmission. Furthermore, the narrowband communication unit features bidirectional communication capabilities, enabling it to not only transmit signals but also receive feedback from the command terminal at the command center. The narrowband communication unit is electrically connected to the positioning unit via a data interface to receive the current location information sent by the positioning unit and organize it into data packets. When the location information transmission device is airborne, the narrowband communication unit can establish a communication link with the command terminal at the command center. Data packets containing the current location information can be continuously transmitted to the command terminal via this communication link using low-power communication, ensuring smooth transmission even in areas without traditional communication infrastructure. After transmitting the current location information to the command terminal, the narrowband communication unit awaits confirmation from the command terminal, which is then fed back to the narrowband communication unit via the same communication link.

[0031] The optical display unit is electrically connected to the narrowband communication unit, and a plurality of first optical display modes are configured in the optical display unit to characterize different working states of the narrowband communication unit. The plurality of first optical display modes can be distinguished and set by means of color change, brightness change or flashing frequency change. For example, when the first optical display mode is always on, it indicates that the communication link between the narrowband communication unit and the command terminal is successfully established; when the first optical display mode is flashing, it indicates that the communication link between the narrowband communication unit and the command terminal is being established; when the first optical display mode is red, it indicates that a rescue signal has been sent and is waiting for feedback; when the first optical display mode is green, it indicates that a feedback signal from the command terminal has been received. The above optical display modes of the optical display unit are only examples for ease of understanding. The specific optical display mode can be determined according to the actual scenario, and this embodiment does not make any special restrictions.

[0032] The drive unit serves as a driving component of the position information transmission device and plays a driving role. The drive unit can be set at the tail of the position information transmission device and can generate sufficient lift-off thrust to enable the position information transmission device to break through obstacles such as trees, bushes or buildings on the ground and rise into the air. In this embodiment, the lift-off height of the position information transmission device may vary depending on different environments. Therefore, this embodiment can set the lift-off height of the position information transmission device in advance. When the position information transmission device reaches the predetermined height, the drive unit stops working and the position information transmission device enters the descent process. Of course, it is also possible to wait for the fuel inside the drive unit to be naturally exhausted. The specific details depend on the actual on-site environment and are not specifically limited in this embodiment.

[0033] The suspension unit is used to provide resistance during the falling process of the position information transmission device, prolong the falling time of the position information transmission device, and gain time for communication between the position information transmission device and the command terminal.

[0034] The power supply unit is capable of powering the aforementioned positioning unit, narrowband communication unit, optical display unit, drive unit, and hovering unit. This power supply duration must be greater than the time the location information transmission device remains airborne to ensure stable signal transmission. Battery specifications are selected based on the communication frequency, operating mode, and the time difference between launch and landing. Furthermore, after the location information transmission device lands on the ground, the positioning unit can continue to transmit location information via the narrowband communication unit, facilitating its recovery and reuse.

[0035] In actual use, the location information transmission device proposed in this embodiment requires rescuers to carry the device. As the rescuer moves, the positioning unit automatically and continuously acquires current location information. It can obtain data such as longitude, latitude, altitude, or timestamp in real time through GPS, Beidou, or ground-based wireless grid positioning technology. This data is then used to generate and store a standard-formatted distress signal data packet, which is then transmitted via the narrowband communication unit. When a distress signal needs to be transmitted, the drive unit is activated, launching the location information transmission device into the air. After the location information transmission device reaches a predetermined altitude, the drive unit stops operating and the hovering unit is activated, allowing the location information transmission device to slowly and steadily descend. This typically takes several minutes to ensure that the narrowband communication unit can establish a communication link with the command terminal and effectively transmit signals. During this process, the optical display unit serves as a visible light source signal, allowing the command center to intuitively view the current distress location. It also serves as a status signal indicating whether the communication link between the narrowband communication unit and the command terminal has been successfully established, allowing rescuers to determine whether signal transmission has been completed and proceed with the next rescue action. When the narrowband communication unit receives the feedback signal from the command terminal, the rescuers can proceed with the next rescue plan. At the same time, they wait for the location information transmission device to land on the ground and perform operations such as recovering, maintaining, or replacing the location information transmission device based on the current location information sent by the positioning unit.

[0036] The position information transmission device proposed in this embodiment breaks the coverage limitations of ground equipment by pushing the device into the air and allowing it to remain in the air, ensuring that the communication signal can be effectively and stably transmitted to the command terminal. Especially in environments with complex terrain and difficult signal coverage, such as forests or mountainous areas, the position information transmission device of this embodiment can also stably transmit distress signals, enabling the command center to quickly confirm the exact location of rescuers and reduce delays caused by the failure of traditional communication means. At the same time, the signal feedback mechanism between the position information transmission device and the command terminal can promptly confirm whether the signal has been successfully transmitted, avoiding mistransmission or omission. The position information transmission device of this embodiment adopts an integrated design and is extremely portable. Rescuers only need to perform simple operations to master it.

[0037] In some optional embodiments, the narrowband communication unit can also wirelessly communicate with an external handheld terminal to achieve effective communication of information.

[0038] Specifically, rescuers can use a handheld terminal and wirelessly connect the handheld terminal to the narrowband communication unit of the location information transmission device. Rescuers can edit the current rescue conditions or surrounding environment information on the handheld terminal, such as a brief description of emergency situations such as fires and landslides, and organize the above information into explanatory information and send it to the narrowband communication unit. The narrowband communication unit then packages and encrypts it together with the current location information and sends it to the command terminal of the command center. This allows the command center to have a more comprehensive understanding of the rescue environment so that it can make a more reliable rescue plan. In addition, after the command center makes a rescue plan based on the above explanatory information and location information, it can also send the rescue plan to the location information transmission device, which is then decrypted by the narrowband communication unit and sent to the handheld terminal. At this time, rescuers can also carry out rescue according to the rescue plan of the command center.

[0039] In some optional embodiments, the optical display unit may be implemented using high-brightness LED lamp beads.

[0040] Specifically, in this embodiment, the optical display unit is composed of a plurality of LED lamp beads to form a high-brightness optical display area. The plurality of LED lamp beads can be arranged in a matrix type, and can be specifically arranged in the head area or the surrounding area of ​​the position information transmission device, so that the light emission and changes of the optical display unit can be visually observed. In the area where the optical display unit is set, the adjacent shell can be designed to be transparent so that the light emission and changes of the optical display unit can be observed from the outside. Of course, the optical display unit can also be set independently of the external arrangement of the shell, and this embodiment does not make special limitations. In addition, the optical display unit needs to be encapsulated to achieve waterproof and dustproof effects to adapt to harsh environments.

[0041] In some optional embodiments, the driving unit is implemented using a jet-type emission method.

[0042] Specifically, in this embodiment, the drive unit includes a jet assembly, inside which compressed air is installed. The compressed air can be realized by gases such as carbon dioxide. The drive unit can generate sufficient lift-off thrust to ensure that the position information transmission device breaks through ground obstacles and quickly takes off. After the drive unit is started, the compressed air is released and expands, quickly pushing the position information transmission device into the air. In this embodiment, the jet assembly of the drive unit adopts a catapult mechanism and lightweight, high-strength materials to ensure the safe launch of the position information transmission device, while also avoiding the safety hazards brought about by traditional gunpowder launch, greatly improving the safety and reliability of the position information transmission device, and reducing the risk of accidents. When the position information transmission device reaches a predetermined height, the drive unit stops working.

[0043] In some optional embodiments, the hovering unit is implemented using the parachute principle.

[0044] Specifically, in this embodiment, the hovering unit includes a parachute assembly made of high-strength, lightweight materials, such as nylon or polyester, offering excellent wind and tear resistance. Once the position information transmission device reaches a predetermined altitude, the hovering unit is activated. The parachute's diameter and deployment area can be customized to suit specific circumstances, effectively slowing the device's descent and extending its duration in the air, thereby ensuring a safe landing.

[0045] In some optional embodiments, the power supply unit is implemented using a rechargeable battery or a detachable disposable dry cell battery, which is convenient for reuse or quick replacement.

[0046] In some optional embodiments, such as Figure 3 As shown, the position information transmitting device further includes a trigger unit and a control unit. The trigger unit is used to trigger and start the position information transmitting device, and the control unit is used to control the position information transmitting device to take off and land.

[0047] Specifically, in this embodiment, the trigger unit is an element that can be triggered by external control, such as a button. When rescuers need to launch the position information transmission device into the air, they only need to press the trigger unit, which converts the trigger action into a first trigger instruction and sends it to the control unit. The control unit responds to the first trigger instruction and controls the drive unit to push the position information transmission device into the air. When the position information transmission device reaches a predetermined height, the drive unit can be controlled to stop working, and the hovering unit can be controlled to work at the same time, so that the position information transmission device can prolong its hovering time and land safely.

[0048] In some optional embodiments, the trigger unit and the control unit may also be linked with the optical display unit.

[0049] Specifically, when a rescuer is about to launch the location information transmission device, the display state of the optical display unit can be adjusted to intuitively display the current rescue situation. In this embodiment, the optical display unit is also configured with multiple second optical display modes. These second optical display modes can be distinguished from the first optical display mode in color, brightness, or flashing frequency. When a rescuer triggers the trigger unit, the triggering method can be different from the aforementioned method for launching the location information transmission device. For example, a rescuer can choose a long press method to trigger the launch of the location information transmission device, while a short press method can be used to trigger the optical display unit to switch between multiple second optical display modes. Then, when the rescuer short presses the trigger unit, the trigger unit generates a second trigger instruction and sends it to the control unit. The control unit, in response to this trigger instruction, controls the optical display unit to switch to the second optical display mode. In this embodiment, the second optical display modes are red and yellow. When the optical display unit displays red, it indicates that the situation is extremely urgent and the rescue priority is the highest. Yellow indicates that the situation is slightly more urgent, but has a lower priority than red. In addition, the number of short presses can be used to correspond to red or yellow. For example, two quick short presses correspond to red, and one quick short press corresponds to yellow. Of course, the above are just examples, and the specific model definition and selection can be determined according to actual conditions.

[0050] In some optional embodiments, a trigger start interface may be provided on the rescuer's handheld terminal, and the trigger unit may be remotely controlled by clicking a relevant icon on the trigger start interface.

[0051] Example 2

[0052] like Figure 4 As shown, this embodiment provides a rescue system comprising a handheld terminal, a command terminal, and a location information transmission device. The handheld terminal and location information transmission device are carried by rescue personnel and brought together to the rescue site. The command terminal can be located at a command center. The specific structure and operating principle of the location information transmission device can be found in Example 1 and will not be further described in this embodiment.

[0053] The following two specific examples illustrate in more detail the application of the position information transmission device proposed in the present invention in the field of emergency rescue.

[0054] Case 1: Forest fire emergency rescue

[0055] Background: Forest fires often result in widespread vegetation destruction, and smoke and the complex forest terrain often render traditional communication methods inoperable. In these situations, locating rescuers and transmitting distress signals become major challenges.

[0056] Application Process:

[0057] (1) Carrying and starting the device

[0058] After receiving a rescue mission, rescuers carry a location information transmission device to the fire scene. Once inside the fire zone, they activate the location information transmission device. Upon activation, the positioning unit automatically obtains the current location information via GPS or the Beidou satellite system, encodes the current location information and a timestamp, and prepares to transmit it to the command center.

[0059] (2) Launch and hovering of the device

[0060] Rescue workers activate the drive unit, which propels the location information transmitter rapidly into the air. This rapid ascent effectively overcomes the effects of dense smoke or atmospheric disturbances in the fire area, allowing the location information transmitter to break through low-altitude signal barriers.

[0061] When the position information transmission device rises to a predetermined height (such as 300 meters or higher), it starts to open the hovering unit to stabilize the hovering. The hovering time is usually several minutes. During the hovering period, the narrowband communication unit establishes a communication link with the command terminal of the command center to transmit data packets including current position information, distress signals, current status of the rescue personnel or environmental information. During this process, the optical display unit provides a visible light source signal, and indicates the rescue personnel's distress call and the working status of the narrowband communication unit through different optical display modes (such as different colors, brightness or flashing frequencies).

[0062] (3) Signal transmission and feedback

[0063] While airborne, the location information transmitter transmits its current location and other distress information to the command terminal in real time via a narrowband communication unit. Because the location information transmitter is airborne and the signal is unaffected by obstacles such as trees and smoke, the signal transmission success rate is greatly improved.

[0064] After the command terminal of the command center receives the signal, the command center can confirm the location of the rescue personnel and provide feedback to the location information transmission device through a narrowband communication link.

[0065] (4) Landing and subsequent processing

[0066] After the signal is successfully transmitted and feedback is received, the location information transmission device slowly and safely descends to the ground via the suspension unit for recovery. After receiving the feedback, the rescuers will continue to follow the instructions of the command center to ensure an efficient and orderly rescue.

[0067] Case 2: Emergency rescue after an earthquake in a mountainous area

[0068] Background: When an earthquake strikes a mountainous area, landslides, collapsed buildings, and damage to power and communication infrastructure can cause ground communication networks to fail, cutting off contact between rescuers and command centers. In such cases, relying on traditional communication equipment may not be able to promptly locate trapped people.

[0069] Application Process:

[0070] (1) Carrying and starting the device

[0071] After an earthquake strikes, rescue workers enter the mountainous disaster area carrying location information transmitters. Once in the earthquake zone, they activate the location information transmitter. The positioning unit automatically acquires the current location information via GPS or the Beidou satellite system, encodes the current location information and a timestamp, and prepares to transmit it to the command center.

[0072] (2) Launch and hovering of the device

[0073] The rescuer starts the driving unit, which pushes the position information transmission device into the air quickly, allowing the position information transmission device to quickly break through obstacles such as mountains and canyons, and after reaching a relatively open hovering altitude (for example, 300 meters or higher), the hovering unit is turned on to stabilize the hovering. The hovering time is usually several minutes. During the hovering period, the narrowband communication unit establishes a communication link with the command terminal of the command center to transmit data packets including current location information, distress signals, current status of the rescuer or environmental information. During this process, the optical display unit provides a visible light source signal, and indicates the rescuer's distress call and the working status of the narrowband communication unit through different optical display modes (such as different colors, brightness or flashing frequencies).

[0074] (3) Signal transmission and feedback

[0075] While in the air, the location information transmission device transmits the current location information and other distress information to the command terminal in real time via a narrowband communication unit. The command center can determine the rescue priority based on the signal content and notify on-site rescue personnel through a feedback mechanism.

[0076] (4) Landing and subsequent processing

[0077] After the signal is successfully transmitted and feedback is received, the location information transmission device slowly and safely descends to the ground via the suspension unit for recovery. After receiving the feedback, the rescuers will continue to follow the instructions of the command center to ensure an efficient and orderly rescue.

[0078] Through the above two examples, we can see that the present invention can effectively transmit location information and obtain effective distress feedback in different types of complex environments. The main difference between the two is reflected in the different application scenarios and the specific impact of terrain and climate conditions on the use of the location information transmission device.

[0079] The primary challenges during forest fires are dense smoke and vegetation obstruction, making it crucial for the location information transmitter to overcome low-altitude obstacles and achieve stable signal transmission. The challenges during mountain earthquakes are mountain obstruction and complex canyon terrain, making it crucial for the location information transmitter to provide stable long-distance signal transmission in these high mountains and complex terrain, while also maintaining sufficient airtime to ensure transmission is complete.

[0080] Furthermore, the location information transmission device proposed in this utility model not only transmits location information, but its optical display unit, which uses a visible light source, also provides visible light emergency call and illumination functions. Therefore, the location information transmission device proposed in this utility model can also serve as an electronic torch with narrowband ad hoc network communication capabilities, used for visible light emergency call, illumination, and communication.

[0081] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A position information transmission device, characterized in that: The device comprises: The housing internally carries a positioning unit, a narrowband communication unit, an optical display unit, a driving unit, a hovering unit, and a power supply unit; A positioning unit, used to obtain current location information; a narrowband communication unit, configured to establish a communication link with a command terminal of a command center, send the current location information to the command terminal of the command center via the communication link, and receive feedback information sent by the command terminal of the command center; an optical display unit electrically connected to the narrowband communication unit and emitting visible light, the optical display unit being configured with a plurality of first optical display modes, each of the first optical display modes corresponding to a communication state between the narrowband communication unit and a command terminal of the command center; A driving unit, configured to push the position information transmitting device into the air; A suspension unit, configured to provide resistance during the falling process of the position information transmitting device, thereby extending the falling time of the position information transmitting device; A power supply unit is used to supply power to the positioning unit, the narrowband communication unit, the optical display unit, the driving unit and the hovering unit.

2. The position information transmission device according to claim 1, characterized in that The narrowband communication unit is also used to receive interpretation information sent by an external handheld terminal. The narrowband communication unit packages the current location information and the interpretation information, encrypts them, and sends them to the command terminal of the command center, as well as receives feedback information sent by the command terminal of the command center, decrypts it, and sends it to the external handheld terminal.

3. The position information transmitting device according to claim 1, wherein: The optical display unit includes a plurality of LED lamp beads, which emit visible light and are arranged in a matrix.

4. The position information transmitting device according to claim 1, wherein: The driving unit includes a jet assembly, in which compressed gas is installed. The compressed gas is released and expanded to generate thrust, thereby driving the position information transmission device to move in the air.

5. The position information transmitting device according to claim 1, wherein: The suspension unit includes a parachute assembly, which is deployed when the position information transmitting device reaches a predetermined height. During the falling process of the position information transmitting device, the parachute assembly provides resistance for the position information transmitting device.

6. The position information transmitting device according to claim 1, wherein: The power supply unit is a rechargeable battery or a detachable disposable dry cell.

7. The position information transmitting device according to claim 1, characterized in that: The position information transmission device also includes a trigger unit and a control unit, wherein the trigger unit is electrically connected to the control unit, and the control unit is electrically connected to the optical display unit, the driving unit and the hovering unit respectively. The trigger unit receives a first trigger instruction and sends it to the control unit. The control unit controls the driving unit to push the position information transmission device into the air in response to the first trigger instruction, and controls the driving unit to stop when the position information transmission device reaches a predetermined height, and controls the hovering unit to work at the same time. The trigger unit receives a second trigger instruction and sends it to the control unit. The optical display unit is also configured with multiple second optical display modes. The control unit controls the optical display unit to present a second optical display mode corresponding to the trigger instruction in response to the second trigger instruction.

8. A rescue system, characterized in that: The rescue system includes a handheld terminal, a command terminal and the position information transmission device described in any one of claims 1 to 7, the handheld terminal is wirelessly connected to the position information transmission device, the command terminal is configured in a command center, and the position information transmission device and the command terminal establish a communication link through the narrowband communication unit.

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