Underground emergency search and rescue system based on ring network communication

Abstract

The utility model discloses an underground emergency search and rescue system based on looped network communication, which comprises a portable positioning terminal, a communication relay module and a ground upper computer, and is characterized in that the underground portable positioning terminal realizes the wireless transmission function of underground personnel information data by transmitting and receiving radio frequency signals; according to the utility model, the underground portable positioning terminals can effectively communicate with each other, and the collected data can be accurately transmitted to the main control computer on the ground through the communication relay module, so that a ring network communication system is constructed, and the stability and reliability of information transmission are greatly improved. According to the system, powerful technical support is provided for underground emergency search and rescue work, meanwhile, a solid guarantee is provided for the safety of operators, and rescue and response can be rapidly and effectively carried out under the emergency condition.

Description

Technical Field

[0001] The utility model relates to the technical field of underground emergency search and rescue, in particular to an underground emergency search and rescue system based on ring network communication. Background Art

[0002] In the field of underground emergency search and rescue, accurately locating underground personnel and transmitting relevant data in real time are crucial. Existing underground search and rescue systems mostly use wired communication or simple wireless communication methods, but these methods often face many challenges in practical applications. Wired communication methods require laying complex lines, which is not only costly but also difficult to maintain in the complex and changing environment underground. Although wireless communication methods are flexible, they are limited by the special environment underground, such as rock, moisture, etc., which attenuate and interfere with the signal, resulting in limited signal transmission distance and low positioning accuracy.

[0003] Existing underground search and rescue systems, particularly in radio frequency signal processing, often lack efficient and stable signal processing and transmission mechanisms. The generation, amplification, routing, and transmission of radio frequency signals often suffer from signal loss and noise interference, leading to reduced signal quality and impacting the overall performance of the search and rescue system. Furthermore, these wireless communication methods often only enable point-to-point communication and cannot form a stable ring network structure. Signal transmission lacks redundancy mechanisms, so a failure in a single node or path can affect the entire communication system, significantly complicating actual rescue efforts.

[0004] Therefore, the utility model provides a new solution to solve this problem. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present utility model is to provide an underground emergency search and rescue system based on ring network communication.

[0006] The technical solution is: underground emergency search and rescue system based on ring network communication, including:

[0007] Portable positioning terminal, used to locate the position of underground personnel in real time and transmit personnel information data;

[0008] a communication relay module, configured to relay and amplify data signals from the portable positioning terminal;

[0009] The surface host computer is used to receive signals transmitted from underground and perform data processing and command and dispatch;

[0010] Wherein, the portable positioning terminal includes:

[0011] Inertial navigation module, used to measure the motion parameters of underground personnel;

[0012] A radio frequency communication module, used for wireless communication with the communication relay module or other portable positioning terminals;

[0013] An MCU processor, configured to process data from the inertial navigation module and the radio frequency communication module;

[0014] A display module is connected to the MCU processor via an SPI interface and is used to provide an intuitive interface display to facilitate underground personnel to understand their own situation; and

[0015] The power supply module is used to provide power supply for the portable positioning terminal.

[0016] Preferably, the RF communication module includes a first double-throw switch, a second double-throw switch and an SMA connector, wherein the first double-throw switch and the second double-throw switch form a link between a first channel and a second channel, which are respectively used to send the data signal output by the MCU processor to the SMA connector through the first channel; and send the data signal received by the SMA connector to the MCU processor through the second channel.

[0017] Preferably, a signal transmission processing unit is provided in the first channel, and the signal transmission processing unit includes a driving amplifier, a first capacitor, a second capacitor and a first inductor. The signal input end of the driving amplifier is connected to the first selection contact of the first double-throw switch, and the signal output end of the driving amplifier is connected to one end of the first capacitor, the second capacitor and the first inductor. The other end of the first capacitor is grounded, the other end of the second capacitor is connected to the first selection contact of the second double-throw switch, and the other end of the first inductor is connected to a +5V power supply.

[0018] Preferably, a signal receiving processing unit is provided in the second channel, and the signal receiving processing unit includes a low-noise amplifier, a third capacitor, a fourth capacitor, a fifth capacitor, a second inductor and a third inductor, one end of the third capacitor is connected to the second selection contact of the second double-throw switch, the other end of the third capacitor is connected to the fourth capacitor, one end of the third inductor and the signal input end of the low-noise amplifier through the second inductor, the other end of the fourth capacitor is grounded, and the other end of the third inductor is connected to the bias voltage input end of the low-noise amplifier and is grounded through the fifth capacitor.

[0019] Preferably, the signal receiving processing unit also includes a filtering and regulating circuit, which includes a sixth capacitor, a seventh capacitor, an eighth capacitor, a fourth inductor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor, one end of the fourth inductor and the first resistor is connected to the signal output end of the low-noise amplifier, the other end of the fourth inductor is connected to the sixth capacitor, one end of the third resistor and the +3.3V power supply through the second resistor, the other end of the third resistor is connected to the current adjustment end of the low-noise amplifier, and the other end of the sixth capacitor is grounded; the other end of the first resistor is connected to one end of the fourth resistor and the fifth resistor through the seventh capacitor, the other end of the fourth resistor is grounded, the other end of the fifth resistor is connected to the second selection contact of the first double-throw switch through the eighth capacitor, and is grounded through the sixth resistor.

[0020] Preferably, a signal balancer is further provided between the MCU processor and the first double-throw switch.

[0021] Preferably, the MCU processor uses a DW1000 wireless communication chip.

[0022] Preferably, the first double-throw switch and the second double-throw switch are both MASW-007107 model switches.

[0023] Preferably, the communication relay module includes a plurality of positioning base stations arranged at different locations underground, and the positioning base stations exchange data with a host computer on the ground through wireless communication.

[0024] Preferably, the inertial navigation module includes an accelerometer and a gyroscope, which are used to measure and calculate the movement trajectory and position information of the underground personnel.

[0025] Through the above technical solution, the beneficial effects of the utility model are as follows: the portable underground positioning terminal involved in this application uses the transmission and reception of radio frequency signals to realize the wireless transmission function of underground personnel information data. Not only can the portable underground positioning terminals effectively communicate with each other, but also the collected data is accurately transmitted to the main control computer on the ground through the communication relay module, thereby constructing a ring network communication system, greatly improving the stability and reliability of information transmission. This system provides strong technical support for underground emergency search and rescue work, and also provides a solid guarantee for the safety of operators, ensuring that rescue and response can be carried out quickly and effectively in emergency situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a system module structure diagram of the underground emergency search and rescue system based on ring network communication in the utility model.

[0027] Figure 2 This is a block diagram of the structure of the portable positioning terminal in the present utility model.

[0028] Figure 3 This is a control principle diagram between the MCU processor and the radio frequency communication module in this utility model.

[0029] Figure 4 This is a circuit diagram of the radio frequency communication module in this utility model.

[0030] Figure 5 This is a circuit diagram of the MCU processor in this utility model. DETAILED DESCRIPTION

[0031] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figure 1 To the attached Figure 5 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the accompanying drawings.

[0032] Various exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0033] like Figure 1 As shown in FIG, the underground emergency search and rescue system based on ring network communication includes:

[0034] Portable positioning terminal, used to locate the position of underground personnel in real time and transmit personnel information data;

[0035] A communication relay module, used for relaying and amplifying data signals from a portable positioning terminal;

[0036] The ground host computer is used to receive signals transmitted from underground and perform data processing and command and dispatch.

[0037] In the specific implementation process, Figure 2 As shown, the portable positioning terminal includes:

[0038] Inertial navigation module, used to measure the motion parameters of underground personnel;

[0039] A radio frequency communication module, used for wireless communication with a communication relay module or other portable positioning terminals;

[0040] MCU processor, used to process data from the inertial navigation module and RF communication module;

[0041] The display module is connected to the MCU processor via the SPI interface to provide an intuitive interface display to help underground personnel understand their own situation; and

[0042] The power supply module is used to provide power supply for the portable positioning terminal.

[0043] In a specific embodiment, the inertial navigation module includes an accelerometer and a gyroscope, which are used to measure and calculate the movement trajectory and position information of the underground personnel, and send the measurement results to the MCU processor for processing. The MCU sends the processed data to the display module, which is used to update the position information and movement status of the underground personnel in real time to ensure that the underground personnel can keep abreast of their position and surrounding environment. The power supply module uses a high-capacity lithium battery and is equipped with a power management circuit to ensure long-term stable power supply in the complex environment underground. In addition, the portable positioning terminal is also designed with an emergency help button, so that when the underground personnel encounter an emergency, they can quickly send a distress signal.

[0044] The MCU processor wirelessly communicates with the communication relay module or other portable positioning terminals through the RF communication module to achieve ring network communication. This communication method not only improves the speed and reliability of information transmission, but also enables underground personnel to form an interconnected network to achieve information sharing and collaborative work. In specific implementations, the MCU processor serves as the core control unit, responsible for processing data from the inertial navigation module and the RF communication module, and processing and analyzing the data as needed. Then, through the RF communication module, the MCU processor can wirelessly transmit the processed data to the communication relay module or other portable positioning terminals, thereby achieving real-time updating and sharing of information.

[0045] In a specific embodiment, Figure 3 As shown, the RF communication module includes a first double-throw switch SW1, a second double-throw switch SW2 and an SMA connector P1. The first double-throw switch SW1 and the second double-throw switch SW2 form a link between a first channel and a second channel, which are respectively used to send the data signal output by the MCU processor to the SMA connector P1 through the first channel; and send the data signal received by the SMA connector P1 to the MCU processor through the second channel.

[0046] Specifically, such as Figure 4 As shown, a signal transmission processing unit is provided in the first channel, and the signal transmission processing unit includes a driving amplifier U5, a first capacitor C19, a second capacitor C21 and a first inductor L1. The signal input end of the driving amplifier U5 is connected to the first selection contact of the first double-throw switch SW1, and the signal output end of the driving amplifier U5 is connected to the first capacitor C19, the second capacitor C21 and one end of the first inductor L1. The other end of the first capacitor C19 is grounded, the other end of the second capacitor C21 is connected to the first selection contact of the second double-throw switch SW2, and the other end of the first inductor L1 is connected to a +5V power supply.

[0047] In the specific implementation process, Figure 5As shown, the MCU processor uses the DW1000 wireless communication chip, which has the characteristics of low power consumption and high precision, and can effectively extend the working time of the downhole equipment while ensuring the reliability of communication. In this embodiment, the data signal enters the signal transmission processing unit through the common processing of the first double-throw switch SW1 and its first selection contact. Figure 4 As shown, both the first double-throw switch SW1 and the second double-throw switch SW2 use the MASW-007107 model, a high-performance GaAs pHEMT MMIC SPDT switch with an operating frequency range of DC to 8 GHz. The signal then enters driver amplifier U5, which uses the HMC326MS8G chip, a high-performance GaAsInGaP HBT MMIC driver amplifier with an operating frequency range of 3 to 4.5 GHz. This amplifier not only features high efficiency but also provides strong signal gain at low power consumption, ensuring signal strength and reliability during transmission. The amplified signal passes through the first capacitor C19 to filter out high-frequency noise. The second capacitor C21 and the first inductor L1 form an LC resonant circuit to further optimize the signal's frequency response. The final signal is output through the first select contact and the common contact of the second double-throw switch SW2 and transmitted through the SMA connector P1, enabling wireless transmission of underground personnel information data.

[0048] In another specific embodiment, Figure 4 As shown, a signal receiving processing unit is provided in the second channel, and the signal receiving processing unit includes a low-noise amplifier U6, a third capacitor C30, a fourth capacitor C38, a fifth capacitor C45, a second inductor L2 and a third inductor L3. One end of the third capacitor C30 is connected to the second selection contact of the second double-throw switch SW2, and the other end of the third capacitor C30 is connected to the fourth capacitor C38, one end of the third inductor L3 and the signal input terminal RFI of the low-noise amplifier U6 through the second inductor L2. The other end of the fourth capacitor C38 is grounded, and the other end of the third inductor L3 is connected to the bias voltage input terminal VBI of the low-noise amplifier U6 and is grounded through the fifth capacitor C45.

[0049] The signal receiving and processing unit also includes a filtering and regulating circuit, which includes a sixth capacitor C46, ​​a seventh capacitor C37, an eighth capacitor C29, a fourth inductor L4, a first resistor R14, a second resistor R19, a third resistor R18, a fourth resistor R12, a fifth resistor R10 and a sixth resistor R8. One end of the fourth inductor L4 and the first resistor R14 is connected to the signal output terminal RFO of the low-noise amplifier U6, the other end of the fourth inductor L4 is connected to the sixth capacitor C46, ​​one end of the third resistor R18 and the +3.3V power supply through the second resistor R19, the other end of the third resistor R18 is connected to the current adjustment terminal Adj of the low-noise amplifier U6, and the other end of the sixth capacitor C46 is grounded; the other end of the first resistor R14 is connected to one end of the fourth resistor R12 and the fifth resistor R10 through the seventh capacitor C37, the other end of the fourth resistor R12 is grounded, and the other end of the fifth resistor R10 is connected to the second selection contact of the first double-throw switch SW1 through the eighth capacitor C29 and is grounded through the sixth resistor R8.

[0050] When the SMA connector receives an external RF signal, the signal is input to one end of the third capacitor C30 through the common contact of the second double-throw switch SW2 and its second selection contact. The third capacitor C30 acts as a coupling capacitor, coupling the RF signal to the second inductor L2. The second inductor L2, acting as a matching inductor, together with the fourth capacitor C38 and the third inductor L3, forms a matching network for adjusting the signal's impedance to ensure that the signal can be effectively transmitted to the input of the low-noise amplifier U6. The low-noise amplifier U6 performs preliminary amplification on the signal to improve the signal-to-noise ratio, thereby providing a clearer signal for subsequent signal processing. In specific implementation, the low-noise amplifier U6 uses the BGB707L7ESDE6327XTSA1 amplifier chip. This amplifier is based on silicon-germanium-carbon (SiGe:C) bipolar technology, is suitable for the 2.4GHz frequency band, and has an extremely low noise figure of only 0.6dB. This low-noise characteristic ensures that the signal is almost free of additional noise during the amplification process, thereby maintaining the purity and high quality of the signal. The amplified signal is further processed by a filtering circuit. The capacitors and inductors in this circuit work together to selectively pass signals within a specific frequency range while suppressing unwanted frequency components, effectively filtering out noise and interference to ensure signal quality. The filtered signal is ultimately sent to the MCU processor for demodulation and decoding to extract useful information.

[0051] Furthermore, a signal balancer is provided between the MCU processor and the first double-throw switch SW1, such as Figure 4 As shown, this embodiment uses the HHM1595A1 balancer to convert the unbalanced signal output by the MCU processor into a balanced signal to improve the anti-interference ability and reduce the transmission loss, thereby ensuring the stability of the signal during transmission.

[0052] The data transmission and reception processes of these portable positioning terminals not only enable intercommunication between different portable positioning terminals underground, but also transmit data between these terminals to the main control computer on the surface via a communication relay module, thus forming a ring network communication system. This system plays a vital role in underground emergency search and rescue operations. It ensures that in emergency situations, rescuers can quickly and accurately obtain the location information of trapped individuals, effectively conducting search and rescue operations and improving rescue efficiency and success rates. At the same time, the ring network communication ensures the stability and reliability of information transmission, maintaining smooth communication even in complex underground environments and providing safety for underground workers.

[0053] In one specific embodiment, the communication relay module includes multiple positioning base stations located at different locations underground. These base stations exchange data with a surface-based host computer via wireless communication. The communication relay module extends the communication range. By setting up multiple positioning base station relay points, the signal can be fully covered throughout the underground area, improving communication efficiency.

[0054] In summary, the portable underground positioning terminal involved in this application realizes the wireless transmission function of underground personnel information data by sending and receiving radio frequency signals. In this process, the transmission and reception of data not only enables the underground portable positioning terminals to communicate with each other effectively, but also transmits the collected data accurately to the main control computer on the ground through the communication relay module, thereby building a ring network communication system, which greatly improves the stability and reliability of information transmission. This system provides strong technical support for underground emergency search and rescue work, and also provides solid protection for the safety of operators, ensuring that rescue and response can be carried out quickly and effectively in emergency situations.

[0055] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this. For technical personnel in the field of the present invention and related technical fields, based on the technical solution of the present invention, any expansion and replacement of operating methods and data should fall within the scope of protection of the present invention.

Claims

1. The underground emergency search and rescue system based on ring network communication is characterized by: include: Portable positioning terminal, used to locate the position of underground personnel in real time and transmit personnel information data; a communication relay module, configured to relay and amplify data signals from the portable positioning terminal; The surface host computer is used to receive signals transmitted from underground and perform data processing and command and dispatch; Wherein, the portable positioning terminal includes: Inertial navigation module, used to measure the motion parameters of underground personnel; A radio frequency communication module, used for wireless communication with the communication relay module or other portable positioning terminals; An MCU processor, configured to process data from the inertial navigation module and the radio frequency communication module; A display module is connected to the MCU processor via an SPI interface and is used to provide an intuitive interface display to facilitate underground personnel to understand their own situation; and The power supply module is used to provide power supply for the portable positioning terminal.

2. The underground emergency search and rescue system based on ring network communication according to claim 1, characterized in that: The radio frequency communication module includes a first double-throw switch, a second double-throw switch and an SMA connector. The first double-throw switch and the second double-throw switch form a link between a first channel and a second channel, respectively used to send the data signal output by the MCU processor to the SMA connector through the first channel; and send the data signal received by the SMA connector to the MCU processor through the second channel.

3. The underground emergency search and rescue system based on ring network communication according to claim 2, characterized in that: A signal transmission processing unit is provided in the first channel, and the signal transmission processing unit includes a driving amplifier, a first capacitor, a second capacitor and a first inductor. The signal input end of the driving amplifier is connected to the first selection contact of the first double-throw switch, and the signal output end of the driving amplifier is connected to one end of the first capacitor, the second capacitor and the first inductor. The other end of the first capacitor is grounded, the other end of the second capacitor is connected to the first selection contact of the second double-throw switch, and the other end of the first inductor is connected to a +5V power supply.

4. The underground emergency search and rescue system based on ring network communication according to claim 3, characterized in that: A signal receiving processing unit is provided in the second channel, and the signal receiving processing unit includes a low-noise amplifier, a third capacitor, a fourth capacitor, a fifth capacitor, a second inductor and a third inductor. One end of the third capacitor is connected to the second selection contact of the second double-throw switch, and the other end of the third capacitor is connected to the fourth capacitor, one end of the third inductor and the signal input terminal of the low-noise amplifier through the second inductor. The other end of the fourth capacitor is grounded, and the other end of the third inductor is connected to the bias voltage input terminal of the low-noise amplifier and is grounded through the fifth capacitor.

5. The underground emergency search and rescue system based on ring network communication according to claim 4, characterized in that: The signal receiving and processing unit also includes a filtering and regulating circuit, which includes a sixth capacitor, a seventh capacitor, an eighth capacitor, a fourth inductor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor. One end of the fourth inductor and the first resistor is connected to the signal output end of the low-noise amplifier, the other end of the fourth inductor is connected to the sixth capacitor, one end of the third resistor and a +3.3V power supply through the second resistor, the other end of the third resistor is connected to the current adjustment end of the low-noise amplifier, and the other end of the sixth capacitor is grounded; the other end of the first resistor is connected to one end of the fourth resistor and the fifth resistor through the seventh capacitor, the other end of the fourth resistor is grounded, and the other end of the fifth resistor is connected to the second selection contact of the first double-throw switch through the eighth capacitor and is grounded through the sixth resistor.

6. The underground emergency search and rescue system based on ring network communication according to claim 5, characterized in that: A signal balancer is further provided between the MCU processor and the first double-throw switch.

7. The underground emergency search and rescue system based on ring network communication according to claim 6, characterized in that: The MCU processor uses the DW1000 wireless communication chip.

8. The underground emergency search and rescue system based on ring network communication according to claim 7, characterized in that: The first double-throw switch and the second double-throw switch are both MASW-007107 switches.

9. The underground emergency search and rescue system based on ring network communication according to claim 1, characterized in that: The communication relay module includes a plurality of positioning base stations arranged at different locations underground, and the positioning base stations exchange data with a host computer on the ground through wireless communication.

10. The underground emergency search and rescue system based on ring network communication according to claim 1, characterized in that: The inertial navigation module includes an accelerometer and a gyroscope, which are used to measure and calculate the movement trajectory and position information of underground personnel.

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