阅读说明：本技术 一种基于超声波雷达的隧道结构收敛变形监测系统及方法 (Tunnel structure convergence deformation monitoring system and method based on ultrasonic radar ) 是由 朱泽奇 冯韬 盛谦 陈国良 闵强强 于 2020-11-30 设计创作，主要内容包括：本发明公开了一种基于超声波雷达的隧道结构收敛变形监测系统,包括布设于隧道衬砌内壁的超声波雷达、安装于超声波雷达外表面的带网孔金属罩、位于超声波发射范围内的至少一个声波定位装置,所述超声波雷达包括三个传感器探头、控制模块,所述控制模块与所述三个传感器探头分别连接；所述声波定位装置包括至少一个反射镜片。本发明还公开了一种基于超声波雷达的隧道结构收敛变形监测方法。本发明基于超声波进行监测,不受隧道内恶劣工作环境和光线程度的影响,在保证监测精度的同时,可保障监测工作的长期开展,一台超声波雷达可配合多个监测断面上的多个声波定位装置使用,有效降低监测成本。(The invention discloses a tunnel structure convergence deformation monitoring system based on an ultrasonic radar, which comprises the ultrasonic radar arranged on the inner wall of a tunnel lining, a metal cover with meshes arranged on the outer surface of the ultrasonic radar, and at least one sound wave positioning device positioned in an ultrasonic wave emission range, wherein the ultrasonic radar comprises three sensor probes and a control module, and the control module is respectively connected with the three sensor probes; the acoustic positioning device includes at least one mirror plate. The invention also discloses a tunnel structure convergence deformation monitoring method based on the ultrasonic radar. The invention carries out monitoring based on ultrasonic waves, is not influenced by severe working environment and light degree in a tunnel, can ensure long-term development of monitoring work while ensuring monitoring precision, and can effectively reduce monitoring cost by matching one ultrasonic radar with a plurality of sound wave positioning devices on a plurality of monitoring sections.)

1. A tunnel structure convergence deformation monitoring system based on an ultrasonic radar is characterized by comprising the ultrasonic radar arranged on the inner wall of a tunnel lining, a metal cover with meshes and arranged on the outer surface of the ultrasonic radar, and at least one sound wave positioning device positioned in an ultrasonic wave emission range;

the ultrasonic radar comprises at least one sensor probe and a control module, wherein the sensor probe is used for transmitting and receiving ultrasonic signals, and the control module is respectively connected with the sensor probe and is used for controlling the sensor probe to transmit and receive the ultrasonic signals;

the acoustic wave positioning device comprises at least one reflector, and the reflector is matched with the sensor probe and used for reflecting ultrasonic signals;

the ultrasonic radar comprises an ultrasonic transmitting circuit and an ultrasonic receiving circuit, the output end of the ultrasonic transmitting circuit is connected with the sensor probe, the sensor probe is connected with a bidirectional light path between the reflecting lenses, the output end of the sensor probe is connected with the ultrasonic receiving circuit, the output end of the ultrasonic receiving circuit is connected with the input end of the control module, the output end of the control module is connected with the ultrasonic transmitting circuit to jointly form a closed circuit, the control module controls the sensor probe to transmit ultrasonic waves and receive the ultrasonic waves reflected back by the reflecting lenses, and the control module times and processes the ultrasonic waves to obtain a tunnel structure convergence deformation result.

2. The sodar-based tunnel structure convergence deformation monitoring system of claim 1, further comprising a support base disposed on an inner wall of the tunnel lining, wherein the sodar is mounted on the support base.

3. The system for monitoring the convergence deformation of the tunnel structure based on the ultrasonic radar as claimed in claim 1, wherein the acoustic wave positioning device further comprises an industrial sponge and an adhesive film, the reflection lens is mounted on the surface of the industrial sponge, and the industrial sponge is fixed on the inner wall of the tunnel lining through the adhesive film.

4. The sodar-based tunnel convergence deformation monitoring system of claim 1, wherein the control module comprises a temperature compensation unit.

5. The sodar-based tunnel structure convergence deformation monitoring system of any one of claims 1-4, wherein the sodar further comprises an LED display screen connected to the control module for displaying the tunnel convergence deformation result.

6. The system according to claim 5, wherein the ultrasonic radar further comprises a WIFI signal receiver connected to the control module for transmitting the tunnel convergence deformation result over a long distance.

7. A tunnel structure convergence deformation monitoring method based on an ultrasonic radar is realized by applying the tunnel structure convergence deformation monitoring system based on the ultrasonic radar as claimed in any one of claims 1 to 6, and comprises the following steps:

s100: performing on-site survey on the monitored shield tunnel section, and determining corresponding monitoring items, monitoring sections and monitoring points according to the monitoring grade;

s200: laying an ultrasonic radar on a monitoring section of the inner wall of the tunnel lining, and laying a sound wave positioning device in an ultrasonic wave emission range;

s300: testing the working performance of the ultrasonic radar, and installing a metal cover with meshes on the surface of the ultrasonic radar after the ultrasonic radar can work normally;

s400: an intensity threshold value for receiving ultrasonic signals is set in the ultrasonic radar, the sensor probe transmits ultrasonic waves to the direction of the sound wave positioning device and receives reflected waves reaching the intensity threshold value, and the control module calculates and obtains a tunnel structure convergence deformation result according to ultrasonic transmission information.

8. The method for monitoring convergence deformation of a tunnel structure based on an ultrasonic radar as claimed in claim 7, wherein the step S200 specifically comprises the following steps:

s201, selecting a monitoring section to distribute an ultrasonic radar according to the spacing distance of the monitoring section and the monitoring range of the ultrasonic radar in the monitoring section determined in the step S100;

s202, arranging an acoustic wave positioning device on each monitoring section determined in the step S100.

9. The method for monitoring convergence and deformation of a tunnel structure based on an ultrasonic radar as claimed in claim 7, wherein the step S400 specifically comprises the following steps:

s401, setting an intensity threshold value for receiving an ultrasonic signal in an ultrasonic radar;

s402, the sensor probe transmits ultrasonic waves to the direction of the acoustic wave positioning device, receives reflected waves reaching an intensity threshold value and times, and the control module converts the time from the transmission of the ultrasonic waves to the reception of the ultrasonic waves into a distance by combining with the propagation speed of the acoustic waves to obtain the distance between the sensor probe and the reflecting mirror;

and S403, repeating S402 to obtain a new distance between the sensor probe and the reflector, and calculating the variation between the two distances to obtain the convergence deformation result of the tunnel structure.

10. The sodar-based tunnel structure convergence deformation monitoring method of claim 7, further comprising: s500: the control module transmits the tunnel structure convergence deformation result to the LED display screen for displaying, and transmits the tunnel structure convergence deformation result to the remote terminal equipment through the WIFI signal.

Technical Field

The invention belongs to the technical field of tunnel engineering monitoring, and particularly relates to a tunnel structure convergence deformation monitoring system and method based on an ultrasonic radar.

Background

The tunnel can receive the influence of various structure diseases in the operation stage, if do not monitor and control, not only can cause economic loss, seriously can bring the loss of lives and property even. Among them, the convergence deformation of the tunnel structure is the most intuitive risk expression type, and is also one of the sources of the occurrence and development of the structural diseases. Therefore, monitoring the convergence deformation of the structure is one of the key concerns of the tunnel health operation.

The conventional tunnel convergence deformation monitoring method mainly comprises a point type direct measurement method, a total station measurement method and a three-dimensional laser scanning technology. For a closed tunnel, the convergence deformation monitoring method is adopted, firstly, the measurement environment is required to have low dust content and good illumination quality in the tunnel, otherwise, the measurement precision is difficult to ensure; secondly, if the comprehensive reflection of the convergence deformation of the tunnel structure is to be completed, a large number of monitoring sections need to be densely distributed at intervals, and although the existing method is technically feasible, a large amount of labor cost is needed; finally, the monitoring of the convergence deformation of the tunnel is a long-term and stable process, while the point type direct measurement method and the total station measurement method in the existing monitoring method are difficult to realize long-term monitoring, and the laser scanning method is greatly influenced by the environment in the tunnel and is difficult to realize continuous, stable and accurate measurement. Therefore, the current method has certain limitations on the long-term monitoring of the convergence deformation of the tunnel.

Disclosure of Invention

In view of the above drawbacks and needs of the prior art, the present invention provides a system and a method for monitoring convergence of a tunnel structure in a long term, which can obtain the convergence deformation of the tunnel structure in real time without interference.

In order to achieve the above object, according to one aspect of the present invention, there is provided a system for monitoring convergence and deformation of a tunnel structure based on an ultrasonic radar, comprising an ultrasonic radar arranged on an inner wall of a tunnel lining, a metal cover with meshes mounted on an outer surface of the ultrasonic radar, and at least one sound wave positioning device located within an ultrasonic wave emission range;

the ultrasonic radar comprises at least one sensor probe and a control module, wherein the sensor probe is used for transmitting and receiving ultrasonic signals, and the control module is respectively connected with the sensor probe and is used for controlling the sensor probe to transmit and receive the ultrasonic signals;

the acoustic wave positioning device comprises at least one reflector, and the reflector is matched with the sensor probe and used for reflecting ultrasonic signals;

the ultrasonic radar comprises an ultrasonic transmitting circuit and an ultrasonic receiving circuit, the output end of the ultrasonic transmitting circuit is connected with the sensor probe, the sensor probe is connected with a bidirectional light path between the reflecting lenses, the output end of the sensor probe is connected with the ultrasonic receiving circuit, the output end of the ultrasonic receiving circuit is connected with the input end of the control module, the output end of the control module is connected with the ultrasonic transmitting circuit to jointly form a closed circuit, the control module controls the sensor probe to transmit ultrasonic waves and receive the ultrasonic waves reflected back by the reflecting lenses, and the control module times and processes the ultrasonic waves to obtain a tunnel structure convergence deformation result.

Further, the system also comprises a supporting base, wherein the supporting base is arranged on the inner wall of the tunnel lining, and the ultrasonic radar is arranged on the supporting base.

Furthermore, the sound wave positioning device further comprises an industrial sponge and a pasting film, the reflection lens is installed on the surface of the industrial sponge, and the industrial sponge is fixed on the inner wall of the tunnel lining through the pasting film.

Further, the control module includes a temperature compensation unit.

Furthermore, the ultrasonic radar also comprises an LED display screen which is connected with the control module and used for displaying the tunnel convergence deformation result.

Further, the ultrasonic radar further comprises a WIFI signal receiver, and the WIFI signal receiver is connected with the control module and used for remotely transmitting the tunnel convergence deformation result.

According to another aspect of the present invention, there is also provided a method for monitoring convergence deformation of a tunnel structure based on an ultrasonic radar, which is implemented by applying the system for monitoring convergence deformation of a tunnel structure based on an ultrasonic radar, and includes the following steps:

s100: performing on-site survey on the monitored shield tunnel section, and determining corresponding monitoring items, monitoring sections and monitoring points according to the monitoring grade;

s200: laying an ultrasonic radar on a monitoring section of the inner wall of the tunnel lining, and laying a sound wave positioning device in an ultrasonic wave emission range;

s300: testing the working performance of the ultrasonic radar, and installing a metal cover with meshes on the surface of the ultrasonic radar after the ultrasonic radar can work normally;

s400: an intensity threshold value for receiving ultrasonic signals is set in the ultrasonic radar, the sensor probe transmits ultrasonic waves to the direction of the sound wave positioning device and receives reflected waves reaching the intensity threshold value, and the control module calculates and obtains a tunnel structure convergence deformation result according to ultrasonic transmission information.

Further, step S200 specifically includes the following steps:

s201, selecting a monitoring section to distribute an ultrasonic radar according to the spacing distance of the monitoring section and the monitoring range of the ultrasonic radar in the monitoring section determined in the step S100;

s202, arranging an acoustic wave positioning device on each monitoring section determined in the step S100.

Further, step S400 specifically includes the following steps:

s401, setting an intensity threshold value for receiving an ultrasonic signal in an ultrasonic radar;

s402, the sensor probe transmits ultrasonic waves to the direction of the acoustic wave positioning device, receives reflected waves reaching an intensity threshold value and times, and the control module converts the time from the transmission of the ultrasonic waves to the reception of the ultrasonic waves into a distance by combining with the propagation speed of the acoustic waves to obtain the distance between the sensor probe and the reflecting mirror;

and S403, repeating S402 to obtain a new distance between the sensor probe and the reflector, and calculating the variation between the two distances to obtain the convergence deformation result of the tunnel structure.

Further, the method further comprises: s500: the control module transmits the tunnel structure convergence deformation result to the LED display screen for displaying, and transmits the tunnel structure convergence deformation result to the remote terminal equipment through the WIFI signal.

In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:

1. the invention is based on ultrasonic wave for monitoring, is waterproof and dustproof, is not influenced by severe working environment and light degree in the tunnel, and can ensure long-term development of monitoring work while ensuring monitoring precision. And adopt receiving and dispatching integration type ultrasonic sensor, reduced the wiring demand in the tunnel.

2. According to the invention, the metal cover with the meshes is arranged on the surface of the ultrasonic radar, so that the conditions of ultrasonic radar damage and inaccurate monitoring caused by the harsh environments such as lining stripping in a tunnel structure can be prevented, and the long-term stability of ultrasonic radar monitoring is ensured.

3. According to the invention, the ultrasonic radar is arranged on the supporting base, so that the ultrasonic radar can be fixed relative to the inner wall of the tunnel lining, and the ultrasonic radar can accurately monitor the convergence deformation condition of the tunnel structure in the convergence deformation process of the tunnel.

4. According to the invention, through the temperature compensation circuit arranged in the ultrasonic radar control module, the influence of temperature change on the ultrasonic speed is reduced, so that the influence of the temperature change on the monitoring result is effectively reduced, and the monitoring precision is improved.

5. The ultrasonic radar can be matched with a plurality of sound wave positioning devices on a plurality of monitoring sections for use, and a plurality of reflecting lenses can be arranged on the sound wave positioning devices as monitoring points according to monitoring requirements, so that the monitoring cost is effectively reduced.

6. The convergence deformation monitoring method provided by the invention does not need to consider the position coordinates and the geometric relation of the sensor probe and the reflector in the solving process, so that the preparation work and the calculation process of related monitoring are very convenient and simple.

7. According to the invention, the wave-absorbing material industrial sponge is added into the acoustic wave positioning device, so that unnecessary ultrasonic reflection is avoided; and the intensity threshold value for receiving the ultrasonic signal is set in the ultrasonic radar, so that the interference and confusion caused by the ultrasonic wave reflected by other obstacles such as the inner wall of the tunnel lining on the ultrasonic wave reflected by the reflector are avoided, and the detection accuracy is ensured.

Drawings

Fig. 1 is a schematic layout diagram of a tunnel structure convergence deformation monitoring system based on an ultrasonic radar according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an ultrasonic radar according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of an acoustic wave positioning device according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of the operation of the ultrasonic radar according to the embodiment of the present invention.

Fig. 5 is a local coordinate system established in embodiment 2 of the present invention.

Fig. 6 is a schematic flow chart of a tunnel structure convergence deformation monitoring method based on an ultrasonic radar according to an embodiment of the present invention.

In all the figures, the same reference numerals denote the same features, in particular:

1. the method comprises the following steps of (1) tunnel lining, 2 ultrasonic radar, 3 supporting base, 4 metal cover with meshes, and 5 sound wave positioning device;

2-1, a sensor probe, 2-2, an LED display screen, 2-3, a WIFI signal receiver, 2-4, a power supply, 2-5, a switch button and 2-6, and a control module;

5-1 of industrial sponge, 5-2 of adhesive film and 5-3 of reflecting lens.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

As shown in fig. 1, an embodiment of the present invention provides a tunnel structure convergence deformation monitoring system based on an ultrasonic radar, which includes a supporting base 3 disposed on an inner wall of a tunnel lining 1, an ultrasonic radar 2 mounted on the supporting base 3, a metal cover with mesh 4 mounted on an outer surface of the ultrasonic radar 2, and a sound wave positioning device 5 located within an ultrasonic wave transmitting range, wherein the ultrasonic radar 2 transmits an ultrasonic signal to the tunnel lining 1, and then feeds back and receives the ultrasonic signal, obtains a tunnel structure convergence deformation result according to ultrasonic signal processing, and obtains position information of tunnel structure convergence deformation through the sound wave positioning device 5, thereby accurately measuring a tunnel structure convergence deformation position and deformation data, the present invention performs monitoring based on ultrasonic waves, is waterproof and dustproof, is not affected by a severe working environment and light degree in a tunnel, and while ensuring monitoring accuracy, the long-term development of monitoring work can be guaranteed.

As shown in fig. 2, in one embodiment of the present invention, the ultrasonic radar 2 includes at least one sensor probe 2-1, an LED display screen 2-2, a WIFI signal receiver 2-3, a power supply 2-4, a switch button 2-5, and a control module 2-6. The sensor probe 2-1, the LED display screen 2-2, the WIFI signal receiver 2-3, the power supply 2-4 and the switch button 2-5 are respectively connected with the control module 2-6. Wherein, the sensor probe 2-1 is used for transmitting and receiving ultrasonic waves; the LED display screen 2-2 is used for displaying the convergence deformation result of the tunnel structure; the WIFI signal receiver 2-3 is used for remotely transmitting the convergence deformation result of the tunnel structure; the control module 2-6 is used for controlling the sensor probe to transmit and receive ultrasonic waves and calculating a tunnel structure convergence deformation result according to ultrasonic transmission information for data processing; the control module comprises a temperature compensation unit for reducing the influence of temperature change on the monitoring result; the control module can adopt AT89C51 and above series single-chip microcomputer.

As shown in fig. 3, in an embodiment of the present invention, the sound wave positioning device 5 includes an industrial sponge 5-1, an adhesive film 5-2, and three reflecting mirrors 5-3, wherein the reflecting mirrors 5-3 are mounted on the surface of the industrial sponge 5-1 for reflecting ultrasonic waves; the industrial sponge 5-1 is fixed on the inner wall of the tunnel lining 1 through a sticking film 5-2. The number of the sensor probes 2-1 is matched with that of the reflector plates 5-3, preferably, as shown in fig. 2 and 3, the number of the sensor probes 2-1 is three, and the number of the sensor probes 2-1 is three, so that the deformation position coordinates and deformation data of the tunnel structure are accurately calculated and obtained through multipoint transmission ultrasonic signals and multipoint reflection ultrasonic signals, and the monitoring of the deformation of the tunnel structure is improved.

The long-term monitoring of the convergence deformation of the tunnel structure is completed jointly through the cooperation of the reflector 5-3 on the sound wave positioning device 5 and the sensor probe 2-1 on the ultrasonic radar 2. The working principle of the device is that the three sensor probes 2-1 on the ultrasonic radar 2 transmit and receive the change of ultrasonic time difference transmitted by the reflecting lenses 5-3 on the acoustic wave positioning device 5, the change is processed by the control modules 2-6 and converted into displacement change, the convergence deformation condition of the tunnel structure is reflected in real time, the real-time monitoring, data transmission, processing, analysis and display of the deformation position coordinates and the deformation amount of the tunnel structure are realized, and the device is high in monitoring precision and efficiency, and is stable and reliable.

As shown in fig. 4, the bottom layer of the ultrasonic radar includes an ultrasonic transmitting circuit and an ultrasonic receiving circuit, an output end of the ultrasonic transmitting circuit is connected to a sensor probe 2-1, the sensor probe 2-1 is preferably a transceiver-integrated ultrasonic sensor probe, the transceiver-integrated ultrasonic sensor probe is connected to the two-way optical path between the reflection lenses 5-3, an output end of the transceiver-integrated ultrasonic sensor probe is connected to the ultrasonic receiving circuit, an output end of the ultrasonic receiving circuit is connected to an input end of the control module, and an output end of the control module is connected to the ultrasonic transmitting circuit to form a closed circuit. As shown in fig. 5, the control module 2-6 controls the transceiver-integrated ultrasonic sensor probe 2-1 to emit ultrasonic waves and receives the ultrasonic waves reflected by the mirror 5-3, and the control module 2-6 counts time and calculates a convergence deformation monitoring result. In addition, preferably, the control modules 2 to 6 are respectively connected to the LED display circuit, the WIFI signal transmission circuit, and the temperature compensation circuit, and are respectively configured to display the calculation data and wirelessly transmit the ultrasonic signal. In addition, the influence of temperature change on a monitoring result can be reduced through the temperature compensation circuit, particularly the influence of external temperature on the monitoring device in cold winter or hot summer is reduced, the temperature of the control modules 2 to 6 is adaptively adjusted through the temperature compensation circuit, the monitoring on the deformation coordinate and the deformation amount of the tunnel structure is guaranteed to be realized under the condition that the control modules are maintained at normal working temperature, and the LED display and the remote transmission of the monitoring result are controlled.

Example 2

As shown in fig. 6, another embodiment of the present invention provides a method for monitoring convergence and deformation of a tunnel structure based on an ultrasonic radar, which is implemented by applying the system for monitoring convergence and deformation of a tunnel structure based on an ultrasonic radar described in embodiment 1, and includes the following steps:

(1) and carrying out site survey on the monitored shield tunnel section, and determining corresponding monitoring items, monitoring sections and monitoring points according to the monitoring grade.

(2) Selecting a monitoring section according to the spacing distance of the monitoring section and the monitoring range of the ultrasonic radar to distribute the ultrasonic radar in the monitoring section; and (3) arranging an acoustic wave positioning device on each monitoring section determined in the step (1).

(3) The working performance of the ultrasonic radar 2 is tested, and after the ultrasonic radar 2 can work normally, the mesh metal cover 4 is arranged on the outer surface of the ultrasonic radar 2, so that the ultrasonic radar is prevented from being interfered by external factors in the long-term monitoring process.

(4) And (5) implementing a tunnel structure convergence deformation monitoring process.

In ultrasonic radars, a threshold value for the intensity of the received ultrasonic signal is set, i.e. only the sound wave signals reaching this threshold value are calculated, and the sound wave signals below this threshold value are not taken into account.

Three sensor probes 2-1 of the ultrasonic radar 2 respectively transmit ultrasonic waves to the direction of the sound wave positioning device 5, timing is started while transmitting, the ultrasonic waves are transmitted in the air and are immediately reflected when encountering obstacles (including the inner wall of the tunnel lining 1 and the reflecting lenses 5-3 on the sound wave positioning device 5) in the process, the sensor probes receive reflected waves reaching an intensity threshold value and then count time t, and the sound wave positioning device is supposed to be5, three reflectors 5-3 are arranged, each sensor probe can successively receive three reflected waves reaching the intensity threshold value, and t is respectively timed₁、t₂、t₃。

The control module 2-6 converts the time t from the transmission of the ultrasonic wave to the reception into a distance by combining the propagation speed of the sound wave, and obtains the distance L between the transmission point of the sensor probe 2-1 and the reflector 5-3, and the calculation formula is as follows:

L＝340×t/2

wherein, L (m) is the distance between the emission point of the sensor probe and the reflector 5-3; t(s) is the time that the ultrasonic wave passes from the emission to the return to the ultrasonic probe after encountering an obstacle; 340(m/s) is the approximate velocity of the ultrasonic wave propagating in air.

Assuming that three sensor probes 2-1 on the ultrasonic radar 2 are respectively R1, R2 and R3, the probes R1, R2 and R3 receive ultrasonic waves reflected by three reflectors S1, S2 and S3, and the distances from the probes R1, R2 and R3 to the reflector S1 are L1, R2 and R3 calculated by the formula_S1R1、L_S1R2、L_S1R3According to the principle, the distances L from the R1, R2 and R3 probes to the reflecting lenses S2 and S3 are obtained in sequence_S2R1、L_S2R2、L_S2R3，L_S3R1、L_S3R2、L_S3R3. Repeating the above operations in the next monitoring, obtaining new distance values from the probes R1, R2 and R3 to the reflectors S1, S2 and S3, and calculating the variation between the two distances, namely the convergence deformation of the tunnel structure. The specific calculation solving process is executed by the control module 2-6, and the control module 2-6 can adopt AT89C51 and the serial single-chip microcomputers.

Because there are three sensor probes, and there are three values for the distance to each reflector, there are three calculated convergence deformation results, and the maximum value can be taken from the safety perspective.

(5) The control module 2-6 transmits the tunnel structure convergence deformation result to the LED display screen 2-2 for displaying, and transmits the tunnel structure convergence deformation result to the remote terminal equipment through the WIFI signal.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.