Communication positioning system and method in tunnel

Abstract

The invention provides an in-tunnel communication positioning system and method. The in-tunnel communication positioning system comprises a positioning device, a positioning server, a scheduling management system and a plurality of wireless APs. The plurality of wireless APs are arranged in the tunnel at intervals; the positioning device comprises a device shell; the signal intensity sensor is wirelessly connected with the plurality of wireless APs; the positioning processing module is electrically connected with the signal intensity sensor; the storage module is electrically connected with the positioning processing module; the control module is electrically connected with the positioning processing module and the storage module; the interaction module is electrically connected with the control module; the power supply module is used for providing power; the positioning processing module is wirelessly connected with the positioning server; the control module is wirelessly connected with the scheduling management system; the wireless AP is arranged in the tunnel, the signal intensity sensor is used for acquiring the signal intensity data of the wireless AP, and the positioning processing unit is used for processing the signal intensity data, so that the position of an operator is accurately positioned, and the problem of inaccurate positioning caused by weak signals in the tunnel is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel positioning, and in particular to a communication positioning system and method in a tunnel. Background Art

[0002] With the acceleration of urbanization, the development and utilization of underground space has become increasingly important. As a key part of urban underground power infrastructure, cable tunnels effectively solve the problems of frequent excavation of urban roads, dense overhead line networks, and inconvenient operation and maintenance. They play an important role in ensuring urban energy security, improving urban functions, beautifying urban landscapes, and promoting intensive, efficient and transformative development of cities. However, cable tunnel clusters have significant safety shortcomings in personnel access management and operation control.

[0003] The environment in the cable tunnel has the characteristics of poor visibility, loud echoes, and weak wireless signals. These factors make it difficult to effectively control the operation situation in the tunnel. It is difficult for operators to get in touch with the outside world in the tunnel, and once an emergency occurs, it is difficult for the outside world to respond in time. In addition, it is difficult for workers in the tunnel to communicate over long distances, which not only affects the efficiency of the operation, but also increases the working time. Operators cannot grasp the location information in the tunnel and key information such as emergency escape exits and fan locations in a timely manner. It is difficult to carry out effective rescue and emergency response in an emergency, which poses a major safety hazard. Summary of the invention

[0004] In order to overcome the defects of the above-mentioned prior art, the present invention provides a tunnel communication positioning system and method for solving the problems of difficult communication, difficult accurate positioning and untimely emergency response in cable tunnels.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In a first aspect, the present invention provides a communication positioning system in a tunnel, comprising a positioning device, a positioning server, a scheduling management system and a plurality of wireless APs; the plurality of wireless APs are arranged at intervals in the tunnel;

[0007] The positioning device comprises:

[0008] Device housing;

[0009] A signal strength sensor is disposed in the housing of the device and wirelessly connected to a plurality of wireless APs to obtain signal strength data of the plurality of wireless APs;

[0010] A positioning processing module, disposed in the device housing and electrically connected to the signal strength sensor, for calculating the position data of the positioning device according to the signal strength data;

[0011] A storage module, disposed in the device housing and electrically connected to the positioning processing module, for storing the position data;

[0012] The control module is arranged in the housing of the device and is electrically connected to the positioning processing module and the storage module respectively, so as to control the positioning processing module and call the position data in the storage module;

[0013] The interactive module is arranged on the device housing and is electrically connected to the control module to provide an interactive operation interface; it is also used to display the current position, navigation path and historical trajectory of the positioning device;

[0014] A power module is disposed in the device housing and is electrically connected to the signal strength sensor, the positioning processing module, the storage module, the control module and the interaction module to provide power;

[0015] The positioning processing module is wirelessly connected to the positioning server to transmit the position data to the positioning server; the control module is wirelessly connected to the scheduling management system to perform data interaction with the scheduling management system.

[0016] Optionally, the positioning device further comprises a gas monitoring module for real-time monitoring of air composition in the tunnel; the gas monitoring module is arranged inside the device housing; the gas monitoring module comprises a gas monitor and a gas data unit;

[0017] The output end of the gas monitor is electrically connected to the input end of the gas data unit, and the output end of the gas data unit is electrically connected to the input end of the control module, so as to obtain external gas data, and send the gas data to the control module after data processing;

[0018] A gas monitoring port is provided on the device shell, and the gas inlet end of the gas monitor is connected to the gas monitoring port.

[0019] Optionally, the positioning device further includes a wireless communication module disposed in the device housing;

[0020] The input end of the wireless communication module is wirelessly connected to the output ends of the plurality of wireless APs, and the output end of the wireless communication module is electrically connected to the input end of the signal strength sensor;

[0021] The input end of the wireless communication module is electrically connected to the output end of the positioning processing module and the control module respectively, and the output end of the wireless communication module is wirelessly connected to the input end of the positioning server and the scheduling management system respectively.

[0022] Optionally, the positioning device further includes a communication module; the communication module includes a sound receiving unit, a sound playing unit, an audio unit, a sound receiving device and a sound playing device;

[0023] The input end of the sound receiving unit is electrically connected to the output end of the sound receiving device, and the output end of the sound receiving unit is electrically connected to the input end of the audio unit; the input end of the sound playing unit is electrically connected to the output end of the audio unit, and the output end of the sound playing unit is electrically connected to the sound playing device; the audio unit is electrically connected to the control module;

[0024] The sound receiving unit, the sound playing unit and the audio unit are all arranged inside the device shell; the sound receiving device and the sound playing device are arranged on the side of the device shell.

[0025] Optionally, the positioning device further includes a help-calling module; the help-calling module includes a help-calling button, a spring and a help-calling unit; the output end of the help-calling unit is electrically connected to the input end of the control module;

[0026] The call button is arranged on the surface of the device housing, and the spring and the emergency call unit are arranged inside the device housing; one end of the spring is connected to the bottom end of the emergency call button, and the other end is connected to the emergency call unit, so as to trigger the emergency call unit to send a signal to the control module by pressing the emergency call button.

[0027] Optionally, the positioning device further includes a camera module, and the camera module includes a camera and an image unit;

[0028] The output end of the camera is electrically connected to the input end of the image unit, and the output end of the image unit is electrically connected to the input end of the control module; the camera is arranged on the surface of the device shell, and the image unit is arranged inside the device shell.

[0029] Optionally, the power module includes a battery compartment, a main battery, and a backup battery; the battery compartment is fixedly connected or integrally formed on the device housing;

[0030] The main battery and the backup battery are arranged in the battery compartment in a manner that they are parallel to each other and are pluggable; a compartment cover is arranged on the battery compartment to cover the opening of the battery compartment.

[0031] Optionally, the positioning device further includes an antenna and an indicator light;

[0032] The antenna is arranged at the top of the device housing and is electrically connected to the wireless communication module to improve the quality and range of wireless communication;

[0033] The indicator light is arranged on the device housing and is electrically connected to the control module to display the working status of the positioning device;

[0034] The device housing is also provided with a communication interface and a USB interface.

[0035] In a second aspect, the present invention provides a method for communication positioning in a tunnel, which is applied to a communication positioning system in a tunnel as described above, and the method comprises:

[0036] Start the positioning device and initialize the positioning device;

[0037] The signal strength sensor collects the signal strength data of the surrounding wireless APs in real time and sends the signal strength data to the positioning processing module;

[0038] The positioning processing module uses a positioning algorithm to calculate the signal strength data to obtain the position data of the positioning device, and sends the position data to the control module;

[0039] The positioning processing module determines whether the signal strength of the wireless AP reaches a preset threshold based on the signal strength data. If so, a communication channel with the positioning server is established and the location data is uploaded to the positioning server. If not, the positioning processing module attempts to adjust the direction or gain setting of the antenna to enhance the signal strength until the signal strength reaches the preset threshold.

[0040] The position data is parsed and matched by the control module, and the current position and navigation path of the positioning device are displayed on the touch screen.

[0041] Optionally, the function expression of the positioning algorithm is as follows:

[0042]

[0043] in, For distance, is the reference signal strength data, RSSI is the real-time signal strength data, is the path loss factor.

[0044] The beneficial effects brought by the embodiments provided by the present invention include:

[0045] The present invention deploys wireless APs in the tunnel, uses a signal strength sensor to obtain the signal strength data of the wireless APs, and processes the signal strength data through a positioning processing unit to accurately locate the location of the operator, effectively solving the problem of inaccurate positioning caused by weak signals in the tunnel. In addition, the location data is uploaded to the positioning server in real time through the wireless communication module, so that the real-time tracking and route monitoring of the operators in the tunnel can be achieved, thereby significantly improving the ability of operation management and emergency response in the tunnel.

[0046] The present invention uses a gas monitoring module integrated in a positioning device to monitor the air composition and gas concentration changes in the tunnel in real time, and sends the gas monitoring data to the control module. The control module determines the quality of the air in the tunnel, and when the air quality is judged to be abnormal, it quickly warns the workers in the tunnel through the sound playback device, and uploads the gas monitoring data to the scheduling management system at the same time, ensuring continuous monitoring of the tunnel working environment and timely response to potential safety risks.

[0047] The present invention realizes a one-key rescue function through a rescue module, allowing operators to press a rescue button in an emergency, and use the control module to send a distress signal to the dispatching management system in real time, ensuring that the outside world can respond quickly and launch rescue operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0049] Figure 1 A schematic diagram of modules of a communication positioning system according to an embodiment of the present specification is shown;

[0050] Figure 2 A schematic diagram of a three-dimensional structure of a positioning device according to an embodiment of the present specification is shown;

[0051] Figure 3 A schematic diagram of the three-dimensional structure of another side of the positioning device according to an embodiment of this specification is shown;

[0052] Figure 4 A front structural schematic diagram of a positioning device according to an embodiment of the present specification is shown;

[0053] Figure 5 A detailed view of part A of a positioning device according to an embodiment of the present specification is shown;

[0054] Figure 6 shows a detailed view of part B of a positioning device according to an embodiment of the present specification;

[0055] Figure 7 An internal structure diagram of a positioning device according to an embodiment of this specification is shown;

[0056] Figure 8 Another internal structure diagram of a positioning device according to an embodiment of the present specification is shown;

[0057] Among them, 1 is the device shell; 2 is the signal strength sensor; 3 is the positioning processing module; 4 is the storage module; 5 is the main board; 6 is the embedded processor; 7 is the wireless communication module; 8 is the touch screen; 9 is the battery compartment; 10 is the compartment cover; 11 is the main battery; 12 is the backup battery; 13 is the gas monitor; 14 is the gas monitoring port; 15 is the radio unit; 16 is the playback unit; 17 is the audio unit; 18 is the radio device; 19 is the playback device; 20 is the call button; 21 is the spring; 22 is the call unit; 23 is the camera; 24 is the image unit; 25 is the antenna; 26 is the indicator light; 27 is the communication interface; 28 is the USB interface; 29 is the sensor interface; 30 is the audio interface. DETAILED DESCRIPTION

[0058] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0059] However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, the description of the known technology is omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0060] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The term "comprising" used herein indicates the existence of features, steps, operations, but does not exclude the existence or addition of one or more other features. It should be noted that all terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used here should be interpreted as having meanings consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] Example 1

[0063] like Figure 1-Figure 8As shown, this embodiment provides a communication positioning system in a tunnel, including a positioning device, a positioning server, a scheduling management system and a plurality of wireless APs; wherein the plurality of wireless APs are arranged at intervals in the tunnel;

[0064] Exemplarily, the positioning device includes a device housing 1, a signal strength sensor 2, a positioning processing module 3, a storage module 4, a control module, an interaction module, a power module, a gas monitoring module, a wireless communication module 7, a call module, a call module and a camera module;

[0065] Specifically, the signal strength sensor 2, the positioning processing module 3, the storage module 4, the control module, the power module, the gas monitoring module, and the wireless communication module 7 are all arranged inside the device housing 1, and the interaction module is arranged on the device housing 1;

[0066] In some embodiments, the signal strength sensor 2 is disposed inside the device housing 1, the input end of the signal strength sensor 2 is electrically connected to the output end of the wireless communication module 7, and the input end of the wireless communication module 7 is wirelessly connected to the output ends of several wireless APs to obtain signal strength data of several wireless APs;

[0067] Wherein, in this embodiment, the signal strength sensor 2 is an RSSI sensor;

[0068] In some embodiments, the positioning processing module 3 is arranged inside the device housing 1; the input end of the positioning processing module 3 is electrically connected to the output end of the signal strength sensor 2, and the output end of the positioning processing module 3 is electrically connected to the input end of the storage module 4, so as to calculate the location data of the location of the positioning device according to the signal strength data of the wireless AP, and transmit the location data to the storage module 4 for storage; the output end of the positioning processing module 3 is electrically connected to the input end of the wireless communication module 7, and the output end of the wireless communication module 7 is wirelessly connected to the input end of the positioning server, so as to upload the location data of the location of the positioning device to the positioning server, so as to realize real-time tracking and trajectory monitoring of the operating personnel by outside personnel;

[0069] In this embodiment, a positioning algorithm is pre-installed in the positioning processing module 3, and the positioning algorithm is an RSSI positioning algorithm; wherein, the positioning processing calculates the precise distance between the current position and the AP point through the signal strength data obtained in real time, combined with the set reference value and path loss factor, and further performs triangulation positioning through the data of multiple AP points to finally determine the spatial position of the device.

[0070] In some embodiments, the control module is arranged inside the device housing 1; the control module is electrically connected to the positioning processing module 3 to control the positioning processing module 3; the input end of the control module is electrically connected to the output end of the storage module 4 to call the location data in the storage module 4; the output end of the control module is wirelessly connected to the scheduling management system through the wireless communication module 7 to interact with the scheduling management system; wherein, the input end of the scheduling management system is wirelessly connected to the output end of the positioning server to call the location data stored in the positioning server.

[0071] Specifically, the control module includes a mainboard 5 and an embedded processor 6 disposed on the mainboard 5; wherein the embedded processor 6 is electrically connected to the mainboard 5 to execute various control tasks and process instructions;

[0072] In this embodiment, the embedded processor 6 is responsible for coordinating and monitoring the operation of the entire system, including but not limited to data acquisition, signal processing, logic judgment and output control, and can respond to external events and internal state changes in real time to achieve data exchange and synchronization. Through the intelligent management of the embedded processor 6, the control module can achieve automatic control, state monitoring and fault diagnosis, and improve the reliability of the positioning device and the user's convenience of operation.

[0073] In some embodiments, the interactive module is disposed on the surface of the device housing 1; the interactive module is electrically connected to the control module to provide an interactive operation interface; and is also used to display the current position and historical trajectory of the positioning device; wherein the interactive module is disposed on the front of the device housing 1;

[0074] Specifically, the interaction module may also include a display screen and operation buttons. The display screen may be configured in the form of a liquid crystal display, a light emitting diode, etc.; the operation buttons are mechanical buttons or touch buttons.

[0075] Specifically, the touch screen 8 can be covered on the display screen, or the touch screen 8 can be integrated with the display screen to realize the input and output functions of the positioning device. After integration, it can be referred to as a touch display screen. The operation buttons include a power switch, a confirmation button, a direction button, a reset button, a return button, and various increase and decrease buttons for adjusting related set values ​​in the operation interface;

[0076] In this embodiment, the interactive module is a touch screen 8, which provides a user interactive interface and can display real-time positioning information to the user. The user can view the current location, historical trajectory, path navigation information and electronic map through the touch screen 8, and provide accurate location information and path planning for the staff in the tunnel, helping the staff to complete tasks efficiently and safely in a complex tunnel environment.

[0077] In some embodiments, a power module is disposed inside the device housing 1; the power module is electrically connected to the signal strength sensor 2, the positioning processing module 3, the storage module 4, the control module, the interaction module, the gas monitoring module, the wireless communication module 7, the call module, the emergency call module and the camera module, respectively, to provide power to each module of the positioning device;

[0078] Specifically, the power module includes a battery compartment 9, a main battery 11, and a backup battery 12; the battery compartment 9 is fixedly connected or integrally formed on the device housing to provide a stable support structure; the main battery 11 and the backup battery 12 are arranged in the battery compartment 9 in a manner that is side by side and each is pluggable, so that the battery can be replaced conveniently, and any battery can be replaced independently as needed without affecting the stability of the entire power module; the battery compartment 9 is provided with a compartment cover 10 to seal the opening of the battery compartment 9 to prevent external substances from entering, while ensuring the safety and protection of the battery during use.

[0079] In some embodiments, the gas monitoring module is disposed inside the device housing 1; the gas monitoring module includes a gas monitor 13 and a gas data unit;

[0080] Specifically, the output end of the gas monitor 13 is electrically connected to the input end of the gas data unit, and the output end of the gas data unit is electrically connected to the input end of the control module, so as to collect air sample data from the tunnel environment, transmit it to the gas data unit for preliminary processing, and transmit the processed data to the control module through the gas data unit for further data analysis and monitoring;

[0081] In order to ensure that the gas monitoring module can collect the air composition in the tunnel in real time, a gas monitoring port 14 is opened on the device housing 1, and the monitoring port is connected to the air inlet end of the gas monitor 13 to ensure smooth collection of air samples.

[0082] In some embodiments, the call module includes a sound receiving unit 15, a sound playing unit 16, an audio unit 17, a sound receiving device 18 and a sound playing device 19;

[0083] Specifically, the input end of the sound receiving unit 15 is electrically connected to the output end of the sound receiving device 18, and the output end of the sound receiving unit 15 is electrically connected to the input end of the audio unit 17, so as to receive an external sound signal, convert the sound signal into an electrical signal, and transmit it to the audio unit 17 for processing; the input end of the sound playing unit 16 is electrically connected to the output end of the audio unit 17, and the output end of the sound playing unit 16 is electrically connected to the sound playing device 19, so as to transmit the processed audio signal to the sound playing unit 16, and the sound playing unit 16 converts the audio signal into audible sound and plays the sound through the sound playing device 19; the audio unit 17 is electrically connected to the control module, so as to control the audio unit 17 through the control module;

[0084] Among them, the sound receiving unit 15, the sound playing unit 16 and the audio unit 17 are all arranged inside the device housing 1 to ensure the compactness and portability of the device; the sound receiving device 18 and the sound playing device 19 are respectively arranged on the side of the device housing 1 to facilitate user operation and debugging.

[0085] In some embodiments, the emergency call module includes an emergency call button 20, a spring 21 and an emergency call unit 22; the output end of the emergency call unit 22 is electrically connected to the input end of the control module;

[0086] Specifically, the emergency button 20 is arranged on the surface of the device housing 1, and the spring 21 and the emergency unit 22 are arranged inside the device housing 1; one end of the spring 21 is connected to the bottom end of the emergency button 20, and the other end is connected to the emergency unit 22, so as to trigger the emergency unit 22 to send a signal to the control module by pressing the emergency button 20.

[0087] In this embodiment, after receiving the signal sent by the distress unit 22 , the control module triggers the corresponding emergency response process and sends the distress information to the dispatch management system through the wireless communication module 7 .

[0088] In some embodiments, the camera module includes a camera 23 and an image unit 24 ; wherein the camera 23 is disposed on the surface of the device housing 1 , and the image unit 24 is disposed inside the device housing 1 .

[0089] Specifically, the output end of the camera 23 is electrically connected to the input end of the image unit 24, and the output end of the image unit 24 is electrically connected to the input end of the control module, so as to be able to collect image data inside the tunnel in real time, convert the image data into a digital signal through the image unit 24, and transmit it to the control module; wherein the image unit 24 is used to process and optimize the image data to ensure that the image is clear and stable and adapts to the complex environmental conditions in the tunnel.

[0090] In some embodiments, the positioning device further includes an antenna 25 and an indicator light 26;

[0091] Specifically, the antenna 25 is disposed at the top of the device housing 1 and is electrically connected to the wireless communication module 7 to improve the quality and range of wireless communication, and can improve the stability and penetration of wireless signals in complex environments such as tunnels.

[0092] Specifically, the indicator light 26 is arranged on the device housing 1 and is electrically connected to the control module, and is used to display the working status of the positioning device in real time, such as the power status, signal connection status, etc., to provide intuitive feedback information to the user, so that the operator can quickly judge the working status of the positioning device;

[0093] In some embodiments, a communication interface 27, a USB interface 28, a sensor interface 29 and an audio interface 30 are also provided on the device housing 1; wherein, the positioning device exchanges data with external devices through the communication interface 27 and the USB interface 28, and can also realize the charging function through the USB interface 28; the positioning device exchanges data with external sensors through the sensor interface 29; the positioning device is connected to an external audio device through the audio interface 30; in this embodiment, the positioning device enhances the extensibility and compatibility of the device by setting multiple interfaces.

[0094] Example 2

[0095] This embodiment provides a communication positioning method in a tunnel, which is applied to the above-mentioned embodiment 1, and the method includes:

[0096] S1: Start the positioning device and initialize the positioning device;

[0097] In some embodiments, S1 specifically includes the following steps:

[0098] After starting the positioning device, the embedded processor 6 starts to activate the signal strength sensor 2, the positioning processing module 3, the wireless communication module 7, etc., to ensure that the positioning device starts normally and is ready for subsequent operations;

[0099] S2: The signal strength sensor 2 collects the signal strength data of the surrounding AP points in real time, and sends the signal strength data to the positioning processing module 3;

[0100] S3: The positioning processing module 3 uses a positioning algorithm to calculate the signal strength data to obtain the position data of the positioning device, and sends the position data to the control module;

[0101] In some embodiments, the positioning algorithm in S3 is an RSSI positioning algorithm;

[0102] Among them, the function expression of the RSSI positioning algorithm is as follows:

[0103]

[0104] in, For distance, is the reference signal strength data, RSSI is the real-time signal strength data, is the path loss factor.

[0105] S4: The positioning processing module 3 determines whether the signal strength of the AP point reaches a preset threshold based on the signal strength data. If so, a communication channel with the positioning server is established and the position data is uploaded to the positioning server; if not, the direction or gain setting of the antenna 25 is adjusted to enhance the signal strength until the signal strength reaches the preset threshold.

[0106] S5: parsing and matching the position data through the control module, and displaying the current position of the positioning device on the touch screen.

[0107] To sum up, this embodiment deploys wireless APs in the tunnel, uses signal strength sensor 2 to obtain signal strength data of the wireless APs, and processes the signal strength data through a positioning processing unit to accurately locate the location of the workers, thereby effectively solving the problem of inaccurate positioning caused by weak signals in the tunnel.

[0108] This embodiment uploads the location data to the positioning server in real time through the wireless communication module 7, so as to realize real-time tracking and route monitoring of the workers in the tunnel, thereby significantly improving the ability of operation management and emergency response in the tunnel.

[0109] This embodiment uses a gas monitoring module integrated in the positioning device to monitor the air composition and gas concentration changes in the tunnel in real time, and sends the gas monitoring data to the control module. The control module determines the quality of the air in the tunnel, and when the air quality is judged to be abnormal, it quickly warns the workers in the tunnel through the sound playback device 19, and uploads the gas monitoring data to the scheduling management system, ensuring continuous monitoring of the tunnel working environment and timely response to potential safety risks.

[0110] This embodiment implements a one-key rescue function through the rescue module, allowing operators to press the rescue button 20 in an emergency, and use the control module to send a distress signal to the dispatch management system in real time, ensuring that the outside world can respond quickly and launch rescue operations.

[0111] This embodiment performs path navigation through the interactive module, which can provide operators with the best path guidance to reach the safe exit, helping them to evacuate quickly in an emergency, thereby improving the efficiency and effectiveness of emergency response.

[0112] The above description is only a preferred embodiment of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A communication and positioning system in a tunnel, characterized in that: Including positioning device, positioning server, dispatching management system and several wireless APs; The plurality of wireless APs are arranged at intervals in the tunnel; The positioning device comprises: Device housing; A signal strength sensor is disposed in the housing of the device and wirelessly connected to a plurality of wireless APs to obtain signal strength data of the plurality of wireless APs; A positioning processing module, disposed in the device housing and electrically connected to the signal strength sensor, for calculating the position data of the positioning device according to the signal strength data; A storage module, disposed in the device housing and electrically connected to the positioning processing module, for storing the position data; The control module is arranged in the housing of the device and is electrically connected to the positioning processing module and the storage module respectively, so as to control the positioning processing module and call the position data in the storage module; The interactive module is arranged on the device housing and is electrically connected to the control module to provide an interactive operation interface; it is also used to display the current position, navigation path and historical trajectory of the positioning device; A power module is disposed in the device housing and is electrically connected to the signal strength sensor, the positioning processing module, the storage module, the control module and the interaction module to provide power; The positioning processing module is wirelessly connected to the positioning server to transmit the position data to the positioning server; the control module is wirelessly connected to the scheduling management system to perform data interaction with the scheduling management system.

2. The system according to claim 1, characterized in that The positioning device further comprises a gas monitoring module for real-time monitoring of air composition in the tunnel; the gas monitoring module is arranged inside the device housing; the gas monitoring module comprises a gas monitor and a gas data unit; The output end of the gas monitor is electrically connected to the input end of the gas data unit, and the output end of the gas data unit is electrically connected to the input end of the control module, so as to obtain external gas data, and send the gas data to the control module after data processing; A gas monitoring port is provided on the device shell, and the gas inlet end of the gas monitor is connected to the gas monitoring port.

3. The system according to claim 1, characterized in that The positioning device also includes a wireless communication module disposed in the device housing; The input end of the wireless communication module is wirelessly connected to the output ends of the plurality of wireless APs, and the output end of the wireless communication module is electrically connected to the input end of the signal strength sensor; The input end of the wireless communication module is electrically connected to the output end of the positioning processing module and the control module respectively, and the output end of the wireless communication module is wirelessly connected to the input end of the positioning server and the scheduling management system respectively.

4. The system according to claim 1, characterized in that The positioning device also includes a communication module; the communication module includes a sound receiving unit, a sound playing unit, an audio unit, a sound receiving device and a sound playing device; The input end of the sound receiving unit is electrically connected to the output end of the sound receiving device, and the output end of the sound receiving unit is electrically connected to the input end of the audio unit; the input end of the sound playing unit is electrically connected to the output end of the audio unit, and the output end of the sound playing unit is electrically connected to the sound playing device; the audio unit is electrically connected to the control module; The sound receiving unit, the sound playing unit and the audio unit are all arranged inside the device shell; the sound receiving device and the sound playing device are arranged on the side of the device shell.

5. The system according to claim 1, characterized in that The positioning device also includes a help-calling module; the help-calling module includes a help-calling button, a spring and a help-calling unit; the output end of the help-calling unit is electrically connected to the input end of the control module; The call button is arranged on the surface of the device housing, and the spring and the emergency call unit are arranged inside the device housing; one end of the spring is connected to the bottom end of the emergency call button, and the other end is connected to the emergency call unit, so as to trigger the emergency call unit to send a signal to the control module by pressing the emergency call button.

6. The system according to claim 1, characterized in that The positioning device further includes a camera module, which includes a camera and an image unit; The output end of the camera is electrically connected to the input end of the image unit, and the output end of the image unit is electrically connected to the input end of the control module; the camera is arranged on the surface of the device shell, and the image unit is arranged inside the device shell.

7. The system according to claim 1, characterized in that The power module includes a battery compartment, a main battery, and a backup battery; the battery compartment is fixedly connected or integrally formed on the device housing; The main battery and the backup battery are arranged in the battery compartment in a manner that they are parallel to each other and are pluggable; a compartment cover is arranged on the battery compartment to cover the opening of the battery compartment.

8. The system according to claim 3, characterized in that The positioning device also includes an antenna and an indicator light; The antenna is arranged at the top of the device housing and is electrically connected to the wireless communication module to improve the quality and range of wireless communication; The indicator light is arranged on the device housing and is electrically connected to the control module to display the working status of the positioning device; The device housing is also provided with a communication interface and a USB interface.

9. A tunnel communication positioning method, applied to a tunnel communication positioning system according to claims 1-8, characterized in that: The method comprises: Start the positioning device and initialize the positioning device; The signal strength sensor collects the signal strength data of the surrounding wireless APs in real time and sends the signal strength data to the positioning processing module; The positioning processing module uses a positioning algorithm to calculate the signal strength data to obtain the position data of the positioning device, and sends the position data to the control module; The positioning processing module determines whether the signal strength of the wireless AP reaches a preset threshold based on the signal strength data. If so, a communication channel with the positioning server is established and the location data is uploaded to the positioning server. If not, the positioning processing module attempts to adjust the direction or gain setting of the antenna to enhance the signal strength until the signal strength reaches the preset threshold. The position data is parsed and matched by the control module, and the current position and navigation path of the positioning device are displayed on the touch screen.

10. The method according to claim 9, characterized in that The function expression of the positioning algorithm is as follows: ； in, For distance, is the reference signal strength data, RSSI is the real-time signal strength data, is the path loss factor.

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