Position information transmission device and method and rescue system

Abstract

The invention provides a position information transmission device and method 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 invention, 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, method and rescue system. Background Art

[0002] In the process of emergency rescue, how to quickly communicate with the outside world to inform the outside world of one's own location and situation as soon as possible is a necessary prerequisite for rapid rescue. At present, in the field of emergency rescue, it mainly includes satellite short message communication and ground-based narrowband communication. Satellite short message communication uses satellite communication sending equipment to send short message signals, and the background decodes the satellite signal through the receiving equipment to obtain the distress signal. Although satellite short message communication equipment can provide long-distance communication coverage, its communication link is greatly affected by factors such as weather and terrain. In complex terrain, especially in lush forests or towering mountains, satellite signals often cannot be transmitted stably, resulting in communication failure. In addition, the efficiency of satellite short message communication is low, and the communication system requires more complicated installation and operation. Ground-based narrowband communication uses ground-based narrowband communication technology to transmit through ground base stations. This method is often used for long-distance communication, but its transmission distance and stability are greatly limited under dense vegetation or complex terrain. At present, there are still some positioning and distress devices on the market, but most of them also rely on ground base stations or limited satellite signals, and still have the above-mentioned disadvantages. Summary of the invention

[0003] In order to solve one of the above technical problems, the present invention provides a location information transmission device, method and rescue system.

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

[0005] A housing, inside which a positioning unit, a narrowband communication unit, an optical display unit, a driving unit, a hovering unit and a power supply unit are carried;

[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 through 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 a narrowband communication unit and a command terminal of a command center;

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

[0010] A suspension unit, used to provide resistance during the falling process of the position information transmission device, so as to prolong the falling time of the position transmission 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 and encrypts the current location information and the interpretation information 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 it and sends it to the external handheld terminal.

[0013] Preferably, the optical display unit comprises 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 comprises 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 hovering unit comprises a parachute assembly, which is deployed when the position information transmitting device reaches a predetermined height, and provides resistance for the position information transmitting device during its falling process.

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

[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 a second optical display mode corresponding to the trigger instruction in response to the second trigger instruction.

[0018] A 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] A third aspect of an embodiment of the present invention provides a method for transmitting location information. The method is applied to the device for transmitting location information according to the first aspect of an embodiment of the present invention. The method includes:

[0020] The positioning unit acquires current position information and sends the current position information to the narrowband communication unit;

[0021] Start the driving unit to send the position information transmission device into the air, and when the position information transmission device reaches the highest point, start the hovering unit;

[0022] During the ascent and descent of the position information transmission device, the narrowband communication unit establishes a communication link with the command terminal of the command center, and displays the communication status between the narrowband communication unit and the command terminal of the command center through the optical display unit;

[0023] When the communication link between the narrowband communication unit and the command terminal of the command center is successfully established, the narrowband communication unit sends the current location information to the command terminal of the command center and receives feedback information from the command terminal of the command center.

[0024] Preferably, the method further comprises:

[0025] The narrowband communication unit receives the explanation information sent by the external handheld terminal, and packages the current location information and the explanation information, encrypts them, and sends them to the command terminal of the command center.

[0026] 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 more open air, thereby overcoming terrain obstacles and implementing emergency rescue more quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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:

[0028] Figure 1 This is a schematic diagram of the structure of the position information transmission device according to Embodiment 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of the principle of the position information transmission device described in Example 1 of the present invention;

[0030] Figure 3 Another schematic diagram of the principle of the device for transmitting position information according to Embodiment 1 of the present invention;

[0031] Figure 4 This is a schematic diagram of the principle of the rescue system described in Example 2 of the present invention;

[0032] Figure 5 This is a flowchart of the location information transmission method described in Example 3 of the present invention. DETAILED DESCRIPTION

[0033] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0034] Example 1

[0035] like Figure 1 and Figure 2 As shown, this embodiment proposes a position information transmission device, which 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, the narrowband communication unit, the optical display unit, the drive unit, the hovering unit, and the power supply unit are all centrally deployed inside the housing.

[0036] Specifically, in the present 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.

[0037] The positioning unit has high precision, supports satellite positioning systems and compatible real-time differential positioning functions, can provide sub-meter accuracy, and is suitable for emergency positioning and search and rescue. The positioning unit can be implemented with a GPS chip or a Beidou chip. After receiving the satellite signal, the positioning unit can calculate the current location information in real time, which may include longitude, latitude, altitude and other geographical parameters that can characterize the current location. After the current location information is encoded to generate a digital signal, it can be sent to the outside through a narrowband communication unit.

[0038] The narrowband communication unit can be implemented using low-power wide area network (LPWAN) technology, and has a long signal transmission distance, which can reach several kilometers to more than ten kilometers. In this embodiment, the narrowband communication unit supports spectrum adaptive technology, which can automatically adjust the working frequency band in different signal environments to ensure the stability of signal transmission. At the same time, the narrowband communication unit also has two-way communication capabilities, which can not only send signals outward, but also receive signals fed back from the command terminal of the command center. The narrowband communication unit is electrically connected to the positioning unit through a data interface to receive the current location information sent by the positioning unit and organize it into a data packet. When the location information transmission device is in the air, the narrowband communication unit can establish a communication link with the command terminal of the command center. The data packet with the current location information can be continuously sent to the command terminal through the communication link in a low-power communication mode, ensuring smooth transmission in areas without traditional communication infrastructure. After the current location information is sent to the command terminal, the narrowband communication unit can wait for confirmation feedback from the command terminal, and the feedback signal is fed back to the narrowband communication unit through the same communication link.

[0039] 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 optical display modes of the above optical display units are merely examples for ease of understanding, and their specific optical display modes may be determined according to the actual scenario, and are not specifically limited in this embodiment.

[0040] The driving unit serves as a driving component of the position information transmission device and plays a driving role. The driving unit can be set at the tail of the position information transmission device and can generate sufficient lift-off thrust so that the position information transmission device can 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 height to which the position information transmission device is to be lifted in advance. When the position information transmission device reaches a predetermined height, the driving unit stops working and the position information transmission device enters a descending process. Of course, it is also possible to wait for the fuel inside the driving unit to be naturally exhausted. The specific details depend on the actual on-site environment and are not specifically limited in this embodiment.

[0041] 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 the communication between the position information transmission device and the command terminal.

[0042] The power supply unit can supply power to the above-mentioned positioning unit, narrowband communication unit, optical display unit, driving unit and hovering unit. The power supply time needs to be longer than the time the position information transmission device is in the air to ensure the stability of signal transmission. The battery specifications can be selected based on the communication frequency, working mode and the time difference between launch and landing. At the same time, after the position information transmission device lands on the ground, the positioning unit can also maintain sending position information to the outside through the narrowband communication unit so that the position information transmission device can be recycled and reused.

[0043] When the position information transmission device proposed in this embodiment is actually used, the rescuer needs to carry the position information transmission device. During the movement of the rescuer, the positioning unit can automatically and continuously obtain the current position information, and can obtain data such as longitude, latitude, altitude or timestamp in real time through GPS, Beidou or ground wireless grid positioning technology, and generate and store a distress signal data packet in a standard format, ready to be transmitted outward through the narrowband communication unit. When it is necessary to send a distress signal outward, start the drive unit so that the position information transmission device is launched into the air. After the position information transmission device reaches a predetermined height, the drive unit stops working and starts the hovering unit so that the position information transmission device can slowly and steadily land, which usually takes several minutes to ensure that the narrowband communication unit can establish a communication link with the command terminal and effectively send signals. In this process, the optical display unit can be used as a visible light source signal to enable the command center to intuitively see the current rescue location, and can also be used as a status signal of whether the communication link between the narrowband communication unit and the command terminal is successfully established, so that the rescuer can know whether the signal transmission is completed, so as to carry out the next rescue action. When the narrowband communication unit receives the feedback signal sent by 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 recycling, maintenance or replacement of the location information transmission device according to the current location information sent by the positioning unit.

[0044] The position information transmission device proposed in this embodiment breaks the coverage limitation of ground equipment by pushing the device into the air and allowing it to stay 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 methods. 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 to avoid 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.

[0045] In some optional embodiments, the narrowband communication unit can also wirelessly communicate with an external handheld terminal to achieve effective communication of information.

[0046] 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, which is then packaged and encrypted together with the current location information through the narrowband communication unit and sent 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.

[0047] In some optional embodiments, the optical display unit may be implemented using high-brightness LED lamp beads.

[0048] 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 arranged, 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 arranged independently of the external part of the shell, and this embodiment is not particularly limited. In addition, the optical display unit needs to be encapsulated to achieve waterproof and dustproof effects to adapt to harsh environments.

[0049] In some optional embodiments, the driving unit is implemented by jet emission.

[0050] Specifically, in the present embodiment, the drive unit includes a jet assembly, inside which compressed air is installed. The compressed air can be realized by a gas 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 lifts off. After the drive unit is started, the compressed air is released and expands, rapidly pushing the position information transmission device into the air. In the present embodiment, the jet assembly of the drive unit uses an ejection mechanism and lightweight high-strength materials to ensure the safe launch of the position information transmission device, while also avoiding the safety hazards caused 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.

[0051] In some optional embodiments, the hovering unit is implemented using the parachute principle.

[0052] Specifically, in this embodiment, the hovering unit includes a parachute assembly, which is made of high-strength lightweight materials, such as nylon or polyester fiber, and has good wind resistance and tear resistance. When the position information transmission device reaches a predetermined height, the hovering unit can be activated. The diameter and deployment area of ​​the parachute can be set according to actual conditions, and the safe landing of the position information transmission device can be ensured on the basis of being able to effectively slow down the descent speed of the position information transmission device and prolong the hovering time of the position information transmission device.

[0053] In some optional embodiments, the power supply unit is implemented using a rechargeable battery or a detachable disposable dry battery for easy reuse or quick replacement.

[0054] In some optional embodiments, Figure 3 As shown, the position information transmitting device also 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.

[0055] Specifically, in this embodiment, the trigger unit is an element that can be controlled externally, such as a button. When the rescue personnel need to launch the position information transmission device into the air, they only need to press the trigger unit, and the trigger unit 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 extend its hovering time and land safely.

[0056] In some optional embodiments, the trigger unit and the control unit may also be linked with the optical display unit.

[0057] Specifically, when the rescuer is about to launch the position 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. The second optical display mode can be distinguished from the first optical display mode in color, brightness or flashing frequency. When the rescuer triggers the trigger unit, it can be triggered by a method that is different from the above-mentioned method of starting the position information transmission device to be launched. For example, the rescuer can choose a long press method when triggering the position information transmission device to be launched, and can choose a short press method when triggering the optical display unit to switch between multiple second optical display modes. Then, when the rescuer short presses the trigger unit, the trigger unit will generate a second trigger instruction and send it to the control unit. The control unit responds to the trigger instruction to control the optical display unit to switch the second optical display mode. In this embodiment, the second optical display mode is red and yellow as an example. When the optical display unit is displayed in red, it means that the situation is particularly urgent and the rescue priority is the highest. Yellow means that the situation is slightly urgent, but the priority is lower than red. In addition, the number of short presses can also 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 mode definition and selection can be determined according to the actual situation.

[0058] 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 related icon on the trigger start interface.

[0059] Example 2

[0060] like Figure 4 As shown, this embodiment proposes a rescue system, which includes a handheld terminal, a command terminal and a position information transmission device. The handheld terminal and the position information transmission device are carried by rescue personnel and brought into the rescue site together. The command terminal can be configured in the command center. The specific structure and working principle of the position information transmission device can refer to the contents recorded in Example 1, and will not be repeated in this embodiment.

[0061] Example 3

[0062] like Figure 5 As shown, this embodiment proposes a method for transmitting location information, which can be applied to the location information transmitting device proposed in Embodiment 1. The method includes:

[0063] S101. A positioning unit obtains current location information and sends the current location information to a narrowband communication unit.

[0064] Specifically, after the rescue personnel carry the location information transmission device into the rescue site, the positioning unit will automatically and continuously obtain the current location information, rather than only obtaining the current location information when calling for help. Using a satellite positioning system (such as GPS or Beidou), real-time positioning can be achieved to obtain data such as latitude and longitude, altitude or current time.

[0065] S102, start the driving unit to send the position information transmission device into the air, and when the position information transmission device reaches the highest point, start the hovering unit.

[0066] Specifically, rescuers can start the drive unit to push the location information transmission device into the air. Optionally, the drive unit can be started by a trigger unit such as a button or a trigger. Different operating methods of the trigger unit can also be given different interpretations. For example, if it is started after pressing twice quickly, it means that the situation is particularly urgent, someone is injured or in distress and needs help as soon as possible, or a drone needs to be dispatched to quickly assist in the search, etc. At this time, the optical display unit will also light up red accordingly; pressing once quickly means that the situation is urgent, but the priority is not the highest, and the corresponding optical display unit is displayed in yellow.

[0067] S103. During the ascent and descent of the position information transmission device, the narrowband communication unit establishes a communication link with the command terminal of the command center, and displays the communication status between the narrowband communication unit and the command terminal of the command center through the optical display unit.

[0068] Specifically, the position information transmission device is lifted into the air under the push of the driving unit and begins to hover in the air. It usually takes several minutes for the position information transmission device to rise and finally land. When the predetermined height is reached, the hovering unit of the position information transmission device will automatically open to achieve a slow descent. During the ascent and descent of the position information transmission device, the narrowband communication unit continues to establish a communication link with the command terminal of the command center.

[0069] S104: When the communication link between the narrowband communication unit and the command terminal of the command center is successfully established, the narrowband communication unit sends the current location information to the command terminal of the command center, and receives feedback information from the command terminal of the command center.

[0070] Specifically, when the communication link between the narrowband communication unit and the command terminal of the command center is successfully established, the narrowband communication unit will transmit a signal to the command terminal. At the same time, the optical display unit will also display the status of the narrowband communication unit in different colors, different brightness or different flashing frequencies.

[0071] After receiving the signal, the command terminal at the command center confirms the current location of the rescuer and feeds back the confirmation information to the location information transmission device through the same narrowband communication link, and can then transmit information to the handheld terminal carried by the rescuer through the narrowband communication unit. Through this feedback mechanism, the rescuer can get confirmation from the command center and know that his request for help has been received and is being processed.

[0072] After completing the transmission and feedback of the signal, the location information transmitting device finally lands on the ground and can be recovered.

[0073] In addition, for more complex information, such as rescue requests and environmental information (e.g. descriptions of emergency situations such as fires and landslides), the location information transmission device will also synchronize information with the handheld terminal regularly or manually on site so that it can be sent uniformly when needed.

[0074] The following two specific examples are used to more specifically illustrate the application of the position information transmission device proposed by the present invention in the field of emergency rescue.

[0075] Case 1: Forest fire emergency rescue

[0076] Background: When a forest fire occurs, it often causes large areas of vegetation to burn, and the smoke from the fire and the complex terrain in the forest often make traditional communication methods unable to work properly. In this case, the positioning of rescuers and the transmission of distress signals become the main problems.

[0077] Application Process:

[0078] (1) Carrying and starting the device

[0079] After receiving the rescue mission, the rescuers carry the location information transmission device to the fire scene. Once entering the fire area, the rescuers start the location information transmission device. At the same time, the positioning unit automatically obtains the current location information through the GPS or Beidou satellite system, and encodes the current location information and timestamp, ready to be sent to the command center.

[0080] (2) Launch and hovering of the device

[0081] Rescuers start the drive unit, which pushes the location information transmission device into the air quickly. This rapid ascent can effectively overcome the effects of dense smoke or atmospheric disturbances in the fire area, allowing the location information transmission device to break through the signal barrier at low altitude.

[0082] 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 conditions of rescuers or environmental information. In 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).

[0083] (3) Signal transmission and feedback

[0084] During the hovering process, the position information transmission device sends the current position information and other distress information to the command terminal in real time through the narrowband communication unit. Since the position information transmission device is in the air and the signal is not affected by obstacles such as trees and smoke, the signal transmission success rate is greatly improved.

[0085] 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.

[0086] (4) Landing and subsequent processing

[0087] After the signal is successfully sent and feedback confirmation is received, the location information transmission device slowly and safely descends to the ground through the suspension unit for recovery. After receiving the feedback, the rescuers continue to take further actions according to the instructions of the command center to ensure efficient and orderly rescue.

[0088] Case 2: Emergency rescue after an earthquake in a mountainous area

[0089] Background: When an earthquake occurs in a mountainous area, due to landslides, building collapses, and damage to power and communication facilities, the ground communication network is likely to fail, resulting in the disconnection between rescuers and the command center. At this time, relying on traditional communication equipment may not be able to obtain the specific location of the trapped people in a timely manner.

[0090] Application Process:

[0091] (1) Carrying and starting the device

[0092] After an earthquake occurs, rescuers enter the mountain disaster area and carry a location information transmission device. Once entering the earthquake area, the rescuers activate the location information transmission device. At the same time, the positioning unit automatically obtains the current location information through the GPS or Beidou satellite system, and encodes the current location information and timestamp, ready to be sent to the command center.

[0093] (2) Launch and hovering of the device

[0094] The rescuer starts the drive unit, which pushes the position information transmission device to quickly rise into the air, 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), turn on 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 location information, distress signals, current conditions of the rescuers or environmental information. In 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).

[0095] (3) Signal transmission and feedback

[0096] During the hovering process, the location information transmission device sends the current location information and other distress information to the command terminal in real time through the narrowband communication unit. The command center can determine the rescue priority based on the signal content and notify the on-site rescue personnel through the feedback mechanism.

[0097] (4) Landing and subsequent processing

[0098] After the signal is successfully sent and feedback confirmation is received, the location information transmission device slowly and safely descends to the ground through the suspension unit for recovery. After receiving the feedback, the rescuers continue to take further actions according to the instructions of the command center to ensure efficient and orderly rescue.

[0099] 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.

[0100] The main challenges in forest fires are the obstruction of thick smoke and vegetation, and the key is that the location information transmission device can break through low-altitude obstacles and achieve stable signal transmission. The challenges in mountain earthquakes are the obstruction of mountains and complex canyon terrain. The key is that the location information transmission device can provide long-distance stable signal transmission in high mountains and complex terrain, and the hovering time is long enough to ensure the transmission is completed.

[0101] In addition, the position information transmission device proposed in the present invention can not only transmit position information, but also its optical display unit of visible light source can provide visible light rescue function and lighting function. Therefore, the position information transmission device proposed in the present invention can also be used as an electronic torch with narrowband ad hoc network communication function, which can be used for visible light rescue, lighting and communication.

[0102] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A device for transmitting position information, characterized in that: The device comprises: A housing, inside which a positioning unit, a narrowband communication unit, an optical display unit, a driving unit, a hovering unit and a power supply unit are carried; 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 through 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 a narrowband communication unit and a command terminal of a command center; A driving unit, used to push the position information transmitting device into the air; A suspension unit, used to provide resistance during the falling process of the position information transmission device, so as to prolong the falling time of the position transmission 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, and receives feedback information sent by the command terminal of the command center, decrypts them, and sends them to the external handheld terminal.

3. The position information transmission device according to claim 1, characterized in that: 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 transmission device according to claim 1, characterized in that: 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 transmission device according to claim 1, characterized in that: 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 transmission device according to claim 1, characterized in that: The power supply unit is a rechargeable battery or a detachable disposable dry battery.

7. The position information transmission 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, wherein the trigger unit receives a first trigger instruction and sends it to the control unit, wherein 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, wherein the trigger unit receives a second trigger instruction and sends it to the control unit, wherein the optical display unit is also configured with multiple second optical display modes, and wherein 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 as 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.

9. The method for transmitting position information of the position information transmitting device according to any one of claims 1 to 7, characterized in that: The method comprises: The positioning unit acquires current position information and sends the current position information to the narrowband communication unit; Start the driving unit to send the position information transmission device into the air, and when the position information transmission device reaches the highest point, start the hovering unit; During the ascent and descent of the position information transmission device, the narrowband communication unit establishes a communication link with the command terminal of the command center, and displays the communication status between the narrowband communication unit and the command terminal of the command center through the optical display unit; When the communication link between the narrowband communication unit and the command terminal of the command center is successfully established, the narrowband communication unit sends the current location information to the command terminal of the command center and receives feedback information from the command terminal of the command center.

10. The method for transmitting location information according to claim 9, characterized in that: The method further comprises: The narrowband communication unit receives the explanation information sent by the external handheld terminal, and packages the current location information and the explanation information, encrypts them, and sends them to the command terminal of the command center.

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