A new type of geological disaster collapse detection device and detection method

Abstract

The present invention discloses a novel geological disaster collapse detection device and a detection method. The novel geological disaster collapse detection device comprises a mounting base (1), a main pole (2) arranged on the mounting base (1); a solar panel (3) is arranged on the main pole (2); an annular box (4) is arranged on the mounting base (1) around the main pole (2); a plurality of protection net monitoring sensors (5) are arranged in the annular box (4); the novel geological disaster collapse detection device of the present invention can monitor and warn the rockfall protection net installed on a slope or cliff in real time. For monitoring the rockfall protection net of a larger area, a plurality of novel geological disaster collapse detection devices can be arranged according to different key monitoring areas to monitor the movement trend of the rock or soil under the protection net in real time and make corresponding emergency response, so as to realize the first-time hidden danger investigation and rescue, and further reduce the damage caused by geological disasters to human life and property.

Description

Technical Field

[0001] The present invention relates to the technical field of geological disaster detection, and in particular to a novel geological disaster collapse detection device and detection method. Background Art

[0002] Geological disasters refer to geological actions or phenomena that are caused by natural or human factors and cause losses to human life and property and damage to the environment. The distribution and change patterns of geological disasters in time and space are subject to both the natural environment and human activities, and are often the result of the interaction between humans and nature. Landslides refer to the natural phenomenon that soil or rock on a slope collapses down the slope as a whole or in a dispersed manner along a certain weak surface or weak zone under the action of gravity, affected by factors such as river scouring, groundwater activities, rainwater soaking, earthquakes and artificial slope cutting. For areas prone to rockfall, existing technologies generally use protective nets to reduce the possibility of collapse. Rockfall protection nets are mainly used to prevent geological disasters such as mountain rockfall and collapse from causing harm to people and buildings. It covers the slope of the mountain and fixes it with wire rope nets and wire grids on the slope through anchor rods, support ropes, etc., to strengthen the stability of the rock and soil on the slope of the mountain, thereby reducing the possibility of rock collapse and rolling, and avoiding hitting the roads, houses, pedestrians, etc. below.

[0003] However, at present, since the rockfall protection net can only serve as an auxiliary stabilization system, there is no monitoring and early warning device based on the rockfall protection net to monitor the movement trend of rocks or soil under the protection net in real time and make corresponding emergency responses to further reduce the damage caused by geological disasters to human life and property. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the prior art at least to a certain extent: to provide a new geological disaster collapse detection device and detection method.

[0005] The technical solution of the present invention is as follows: a new type of geological disaster collapse detection device, comprising a mounting base and a main pole arranged on the mounting base; a solar cell panel is arranged on the main pole; an annular box is arranged on the mounting base surrounding the main pole; a plurality of protection net monitoring sensors are arranged in the annular box; the protection net monitoring sensor comprises a substrate; a stress arm, a first slide groove and a slider are arranged on the substrate; a strain gauge is arranged on the stress arm; the slider is slidably matched with the first slide groove; one end of the stress arm is fixed to the substrate, and the other end is connected to the slider through a tension spring; a micro switch is arranged at the end of the first slide groove on the substrate; the micro switch is triggered when the slider slides to the end of the first slide groove.

[0006] As an optimization, a sliding limiter is provided on the substrate, which is used to limit the slider when the slider slides to the end of the first slide groove; the sliding limiter is slidably matched with the second slide groove provided on the substrate; a plug is provided at the outer end of the second slide groove, and a compression spring is provided between the plug and the sliding limiter.

[0007] As an optimization, a wedge block is provided on the slider; when the inclined surface of the wedge block contacts the sliding limiter, the inclined surface of the wedge block drives the sliding limiter to slide along the second sliding groove; when the slider slides to the end of the first sliding groove, the sliding limiter resets and blocks the rear end surface of the wedge block to fix the slider.

[0008] As an optimization, the thickness of the middle part of the stress arm is greater than the thickness of the two ends thereof, the side facing the slider is an arc surface, and the side facing away from the slider is a plane, and the strain gauge is pasted on the plane.

[0009] As an optimization, the stress arm and the slider are both provided with mounting holes for connecting the tension spring, and the slider is also provided with a pull rope connecting hole for fixing the pull rope.

[0010] As an optimization, the protective net monitoring sensor is arranged in the annular box in a spoke shape, and the first slide groove of the protective net monitoring sensor is arranged along the radial direction of the annular box; the protective net monitoring sensor has one end of a micro switch arranged close to the outer wall of the annular box; a pull rope through hole facing the first slide groove is provided on the outer wall of the annular box.

[0011] As an optimization, the new geological disaster collapse detection device also includes a main battery, a backup battery, a main controller, a wireless communication module, a GPS module, and a strain gauge drive module; the main battery and the backup battery are both electrically connected to the solar panel; the solar panel is used to charge the main battery and the backup battery respectively.

[0012] As an optimization, the main battery and the backup battery are both electrically connected to the power supply port; the power input ends of the main controller, wireless communication module, GPS module and strain gauge drive module are all electrically connected to the power supply port; the strain gauge is electrically connected to the strain gauge drive module; the micro switch, strain gauge drive module, wireless communication module and GPS module are all signal-connected to the main controller.

[0013] As an optimization, the wireless communication module is wirelessly connected to the monitoring station and / or the roadside warning station, and the roadside warning station has an audible and visual alarm device and a display screen.

[0014] The present invention also provides a detection method of the novel geological disaster collapse detection device, comprising the following steps:

[0015] 1) Install the mounting base of the new geological disaster collapse detection device on the top of the slope with a rockfall protection net; each protection net monitoring sensor is connected to the pull rope connection hole on the slider with a pull rope, and the other end of the pull rope is passed through the pull rope hole on the outer wall of the annular box and then tensioned and anchored with the rockfall protection net; ensure that the stretching amount of the tension spring in the tensioned state of the pull rope is less than 1 / 5 of the maximum stroke of the slider; equip the number of protection net monitoring sensors and the rockfall protection net anchor points corresponding to the corresponding pull ropes according to the rockfall protection net area to be monitored;

[0016] 2) After installation, turn on the power of the protection net monitoring sensor, the main controller initializes each module and reads the data value of each strain gauge drive module as the reference value;

[0017] 3) The main controller reads the data of the strain gauge drive module in real time and subtracts the reference value to obtain the change value. When the change value exceeds the set reporting threshold, the main controller reads the position and time information of the GPS module and immediately sends a report to the monitoring station together with the change value through the wireless communication module; when the change value does not exceed the set reporting threshold, the main controller reads the position and time information of the GPS module and periodically sends a report to the monitoring station together with the change value through the wireless communication module;

[0018] 4) The main controller detects the closing state of the micro switch of each protection net monitoring sensor in real time. When the micro switches of all protection net monitoring sensors are closed, the alarm flag is triggered. The main controller immediately reads the location and time information of the GPS module and sends a report together with the alarm trigger flag information to the monitoring station and the roadside warning station through the wireless communication module; after receiving the trigger flag information, the roadside warning station immediately issues an audible and visual alarm and promptly reminds passers-by of the geological disaster collapse information ahead on the display screen.

[0019] The present invention has the following beneficial effects: the new geological disaster collapse detection device of the present invention can monitor and warn the rockfall protection net installed on the slope or cliff in real time. For the monitoring of the rockfall protection net with a larger area, multiple new geological disaster collapse detection devices can be arranged according to different key monitoring areas to monitor the movement trend of the rock or soil under the protection net in real time and make corresponding emergency responses, so as to realize the first-time hidden danger investigation and rescue, and further reduce the damage caused by geological disasters to human life and property. The new geological disaster collapse detection device of the present invention can monitor the stress changes of the rockfall protection net by regional multi-point sampling, which greatly reduces the probability of false alarms, and uses solar panels to charge the battery, does not require a power grid, and is flexible to install. In particular, the power supply method using a backup battery can greatly reduce power loss, so as to avoid missing key alarm information due to insufficient power. The present invention detects the stress changes of the sampling points of the rockfall protection net through strain gauges, and can more accurately match the collapse model under the rockfall protection net compared to the accelerometer in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1-2 It is a schematic diagram of the three-dimensional structure of a new type of geological disaster collapse detection device in the embodiment.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the annular box of the novel geological disaster collapse detection device in the embodiment.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the protective net monitoring sensor in the embodiment.

[0023] Figure 5 Schematic diagram of the explosion structure of the protective net monitoring sensor in the embodiment.

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the protective net monitoring sensor in the embodiment.

[0025] Figure 7 It is a schematic diagram of the top view of the protective net monitoring sensor in the embodiment.

[0026] Figure 8 It is a schematic diagram of the tension spring and pull rope state structure of the protective net monitoring sensor in the embodiment.

[0027] Fig. 9 Schematic diagram of the internal module connection of the new geological disaster collapse detection device in the embodiment.

[0028] Fig.10 It is a schematic diagram of the installation of a new type of geological disaster collapse detection device in the embodiment.

[0029] Fig.11It is a circuit diagram between the main battery, backup battery, power supply port and micro switch of the protective net monitoring sensor in the embodiment.

[0030] Among them, 1. mounting base; 2. main pole; 3. solar cell panel; 4. annular box; 5. protective net monitoring sensor; 51. substrate; 52. stress arm; 53. first slide groove; 54. slider; 55. strain gauge; 56. tension spring; 57. micro switch; 58. sliding limiter; 59. second slide groove; 510. plug; 511. compression spring; 512. wedge block. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. Example

[0032] Now combined Figure 1-8 A new type of geological disaster collapse detection device is described, comprising a mounting base 1, a main pole 2 arranged on the mounting base 1; a solar panel 3 is arranged on the main pole 2; a ring box 4 is arranged on the mounting base 1 around the main pole 2; three protective net monitoring sensors 5 are arranged in the ring box 4;

[0033] The protective net monitoring sensor 5 includes a substrate 51; a stress arm 52, a first slide groove 53 and a slider 54 are provided on the substrate 51; a strain gauge 55 is provided on the stress arm 52; the slider 54 is slidably matched with the first slide groove 53; the first slide groove 53 in this embodiment is a dovetail groove, and a dovetail structure matching therewith is provided at the bottom of the slider 54.

[0034] One end of the stress arm 52 is fixed to the base plate 51 , and the other end is connected to the slider 54 via a tension spring 56 ; the sliding stroke of the slider 54 is greater than the length of the tension spring 56 .

[0035] A micro switch 57 is provided on the substrate 51 at the end of the first slide groove 53 ; when the slider 54 slides to the end of the first slide groove 53 , the micro switch 57 can be triggered.

[0036] The base plate 51 is provided with a sliding stopper 58 for limiting the sliding block 54 when the sliding block 54 slides to the end of the first sliding groove 53 .

[0037] The sliding limiter 58 is slidably matched with a second sliding groove 59 provided on the base plate 51 ; a plug 510 is provided at the outer end of the second sliding groove 59 , and a compression spring 511 is provided between the plug and the sliding limiter 58 .

[0038] The sliding block 54 is provided with a wedge block 512 ; when the inclined surface of the wedge block 512 contacts the sliding stopper 58 , the inclined surface of the wedge block 512 drives the sliding stopper 58 to slide along the second sliding groove 59 .

[0039] The compression spring 511 is in a natural state to limit the sliding limiter 58 at one end away from the plug 510 in the second slide slot 59. When the inclined surface of the wedge block 512 presses the sliding limiter 58, the compression spring 511 is compressed, and the sliding limiter 58 slides in the second slide slot 59 close to the plug 510.

[0040] like Figure 7-8 As shown, when the slider 54 slides to the end of the first slide slot 53, the compression spring 511 drives the slide stopper 58 to reset and blocks the rear end surface of the wedge block 512 to fix the slider 54, thereby keeping the slider 54 in a state of triggering the micro switch 57.

[0041] The thickness of the middle portion of the stress arm 52 is greater than that of both ends thereof. The side facing the slider 54 is an arc surface, and the side facing away from the slider 54 is a plane. The strain gauge 55 is pasted on the plane.

[0042] The stress arm 52 and the slider 54 are both provided with mounting holes for connecting the tension spring 56 , and the slider 54 is also provided with a pull rope connecting hole for fixing the pull rope.

[0043] The protective net monitoring sensor 5 is arranged in the annular box 4 in a spoke shape, and the first slide groove 53 of the protective net monitoring sensor 5 is arranged along the radial direction of the annular box 4; the protective net monitoring sensor 5 has an end of a micro switch 57 arranged close to the outer wall of the annular box 4; the outer wall of the annular box 4 is provided with a pull rope through hole facing the first slide groove 53.

[0044] like Fig. 9 As shown, the novel geological disaster collapse detection device also includes a main battery, a backup battery, a main controller, a wireless communication module, a GPS module, and a strain gauge drive module; the main battery, the backup battery, the main controller, and the strain gauge drive module are arranged in the main pole 2; the wireless communication module and the GPS module are arranged on the top of the main pole 2. Preferably, a waterproof box is arranged on the top of the main pole 2 to accommodate the wireless communication module and the GPS module.

[0045] The main battery and the backup battery are both electrically connected to the solar panel 3; the solar panel 3 is used to charge the main battery and the backup battery respectively.

[0046] The main battery and the backup battery are both electrically connected to the power supply port; the power input ends of the main controller, the wireless communication module, the GPS module and the strain gauge drive module are all electrically connected to the power supply port.

[0047] The strain gauge 55 is electrically connected to the strain gauge driving module.

[0048] The micro switch 57, strain gauge drive module, wireless communication module and GPS module are all connected to the main controller by signal.

[0049] In order to realize real-time data reporting, the wireless communication module can wirelessly communicate with the monitoring station and / or the roadside warning station. The roadside warning station has an audible and visual alarm device and a display screen.

[0050] This embodiment provides a detection method of a new type of geological disaster collapse detection device, including the following steps:

[0051] 1) If Fig.10 As shown, the mounting base 1 of the novel geological disaster collapse detection device is installed on the top of the slope provided with a rockfall protection net; each protection net monitoring sensor 5 is connected to the pull rope connection hole on the slider 54 by a pull rope, and the other end of the pull rope is passed through the pull rope hole on the outer wall of the annular box 4 and then tensioned and anchored with the rockfall protection net; ensure that the stretching amount of the tension spring 56 in the tensioned state of the pull rope is less than 1 / 5 of the maximum stroke of the slider 54; the number of protection net monitoring sensors 5 and the rockfall protection net anchor points corresponding to the corresponding pull ropes are equipped according to the rockfall protection net area to be monitored;

[0052] 2) After the installation is completed, the power supply of the protection net monitoring sensor 5 is turned on, and the main controller initializes each module and reads the data value of each strain gauge driving module as the reference value;

[0053] 3) The main controller reads the data of the strain gauge drive module in real time and subtracts the reference value to obtain the change value. When the change value exceeds the set reporting threshold, the main controller reads the position and time information of the GPS module and immediately sends a report to the monitoring station together with the change value through the wireless communication module; when the change value does not exceed the set reporting threshold, the main controller reads the position and time information of the GPS module and periodically sends a report to the monitoring station together with the change value through the wireless communication module; for a monitoring area, if only 1 / 3 of the stress change values ​​of different protective net monitoring sensors 5 exceed the threshold, it can be considered to be a normal fluctuation or false trigger. When more than 2 / 3 exceed the threshold, it is necessary to go to check for hidden dangers and reset the slider 54 of the corresponding protective net monitoring sensor 5;

[0054] Preferably, the main controller stores the change value read by sampling in a circular cache at a period of 2-5ms, and the cache time is 5-10 minutes. When the change value exceeds the set reporting threshold, the main controller reads the location and time information of the GPS module and immediately sends a report to the monitoring station through the wireless communication module together with the change value cache; when the change value does not exceed the set reporting threshold, the main controller reads the location and time information of the GPS module and periodically sends a report to the monitoring station through the wireless communication module together with the change value cache; for example, a report is sent once every hour; in this way, the dynamic data information of the rockfall protection net can be understood. The monitoring station can visualize the data and understand the trend of the change value more intuitively;

[0055] 4) The main controller detects the closing state of the micro switch 57 of each protective net monitoring sensor 5 in real time. When the micro switches 57 of all protective net monitoring sensors 5 are closed, the alarm flag is triggered, and the main controller immediately reads the position and time information of the GPS module and sends a report together with the alarm trigger flag information to the monitoring station and the roadside warning station through the wireless communication module; after receiving the trigger flag information, the roadside warning station immediately sends out an audible and visual alarm and promptly reminds passers-by of the geological disaster collapse information ahead on the display screen; the monitoring station staff needs to go to check for hidden dangers and reset the corresponding protective net monitoring sensor 5 and its slider 54.

[0056] Fig.11 A circuit design diagram between the main battery, backup battery, power supply port and the micro switches 57 of the three protection network monitoring sensors 5 provided in this embodiment.

[0057] In the figure, SW1, SW2, and SW3 are respectively the micro switches 57 of the three protection network monitoring sensors 5; VBAT1 is the positive voltage of the main battery, and VBAT2 is the positive voltage of the backup battery; R1 and R2 are voltage-dividing resistors; Q1 is an N-channel MOS tube, D1 and D2 are diodes, and the diodes D1 and D2 are used to prevent the main battery and the backup battery from charging each other; P1 is the power supply port, and P0 is the main controller signal connection terminal; Fig.11As can be seen from the circuit diagram, the main battery of this embodiment continuously supplies power to the P1 power supply port, that is, the main battery continuously supplies power to the main controller, the wireless communication module, the GPS module and the strain gauge drive module. Since the micro switches 57 of the three protection network monitoring sensors 5 are connected in series, R1 and R2 are only connected when all the micro switches 57 of the three protection network monitoring sensors 5 are closed. At this time, R1 and R2 act as voltage-dividing resistors to divide the backup battery voltage VBAT2 to the P0 port voltage equal to the GPIO high-level voltage of the main controller. At the same time, the P0 port voltage makes the MOS tube gate voltage reach the turn-on threshold, and the Q1 drain D and source S are turned on, so that the backup battery supplies power to the P1 power supply port. As long as any one of the micro switches 57 of the three protection network monitoring sensors 5 is in the disconnected state, the P0 port voltage and the MOS tube gate voltage are 0, the Q1 drain D and source S are disconnected, so that the backup battery is in a power-off state, so that the power can be maintained for a long time without continuous power loss. The external interrupt input pin of the main controller is connected to the P0 port signal to detect the high level of the P0 port. When the P0 level is detected to be high, the main controller can determine that the micro switches 57 of all the protection network monitoring sensors 5 have been closed, triggering the alarm flag. The main controller immediately reads the location and time information of the GPS module and sends a report to the monitoring station and the roadside warning station through the wireless communication module together with the alarm trigger flag information; after receiving the trigger flag information, the roadside warning station immediately issues an audible and visual alarm and promptly reminds passers-by of the geological disaster collapse information ahead on the display screen.

[0058] The strain gauge driving module of this embodiment adopts a commercially available module, which can output a dynamically changing analog voltage value according to the change of the strain gauge 55. The main controller can read the analog voltage value reflecting the stress change of the stress arm 52 through the ADC. Unless otherwise specified, the modules in the present invention can all adopt commercially available modules.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0060] For those skilled in the art, various changes and modifications will undoubtedly be obvious after reading the above description. Therefore, the attached claims should be regarded as covering all changes and modifications to the true intent and scope of the present invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to still be within the intent and scope of the present invention.

Claims

1. A new type of geological disaster collapse detection device, characterized in that: The invention comprises a mounting base (1), a main pole (2) arranged on the mounting base (1); a solar cell panel (3) is arranged on the main pole (2); an annular box (4) is arranged on the mounting base (1) and surrounds the main pole (2); a plurality of protective net monitoring sensors (5) are arranged in the annular box (4); the protective net monitoring sensor (5) comprises a base plate (51); a stress arm (52), a first slide groove (53) and a slider (54) are arranged on the base plate (51); a strain gauge (55) is arranged on the stress arm (52); the slider (54) is slidably matched with the first slide groove (53); one end of the stress arm (52) is fixed to the base plate (51), and the other end is connected to the slider (54) through a tension spring (56); a micro switch (57) is arranged at the end of the first slide groove (53) on the base plate (51); when the slider (54) slides to the end of the first slide groove (53), the micro switch (57) is triggered; The protective net monitoring sensor (5) is arranged in the annular box (4) in a spoke-like manner, and the first slide groove (53) of the protective net monitoring sensor (5) is arranged along the radial direction of the annular box (4); one end of the protective net monitoring sensor (5) having a micro switch (57) is arranged close to the outer side wall of the annular box (4); and a pull rope through hole facing the first slide groove (53) is provided on the outer side wall of the annular box (4); The novel geological disaster collapse detection device further comprises a main battery, a backup battery, a main controller, a wireless communication module, a GPS module, and a strain gauge drive module; the main battery and the backup battery are both electrically connected to the solar panel (3); the solar panel (3) is used to charge the main battery and the backup battery respectively; the main battery and the backup battery are both electrically connected to a power supply port; the power input ends of the main controller, the wireless communication module, the GPS module, and the strain gauge drive module are all electrically connected to the power supply port; the strain gauge (55) is electrically connected to the strain gauge drive module; the micro switch (57), the strain gauge drive module, the wireless communication module, and the GPS module are all signal-connected to the main controller; the wireless communication module is wirelessly connected to a monitoring station and / or a roadside warning station, and the roadside warning station has an audible and visual alarm device and a display screen; The base plate (51) is provided with a sliding stopper (58) for limiting the position of the sliding block (54) when the sliding block (54) slides to the end of the first sliding groove (53); the sliding stopper (58) is slidably matched with a second sliding groove (59) provided on the base plate (51); a plug (510) is provided at the outer end of the second sliding groove (59), and a compression spring (511) is provided between the plug and the sliding stopper (58); The sliding block (54) is provided with a wedge block (512); when the inclined surface of the wedge block (512) contacts the sliding stopper (58), the inclined surface of the wedge block (512) drives the sliding stopper (58) to slide along the second sliding groove (59); When the sliding block (54) slides to the end of the first sliding groove (53), the sliding stopper (58) is reset and blocks the rear end surface of the wedge block (512) to fix the sliding block (54).

2. The new geological disaster collapse detection device according to claim 1 is characterized in that: The thickness of the middle portion of the stress arm (52) is greater than the thickness of the two ends thereof; the side surface facing the slider (54) is a curved surface; the side surface facing away from the slider (54) is a flat surface; and the strain gauge (55) is adhered to the flat surface.

3. The new geological disaster collapse detection device according to claim 2 is characterized in that: The stress arm (52) and the slider (54) are both provided with mounting holes for connecting the tension spring (56), and the slider (54) is also provided with a pull rope connection hole for fixing the pull rope.

4. A detection method of the new geological disaster collapse detection device according to claim 3, comprising the following steps: 1) The mounting base (1) of the novel geological disaster collapse detection device is mounted on the top of a slope provided with a rockfall protection net; each protection net monitoring sensor (5) is connected to the rope connection hole on the slider (54) by a rope, and the other end of the rope is passed through the rope hole on the outer wall of the annular box (4) and then tensioned and anchored to the rockfall protection net; the stretching amount of the tension spring (56) is ensured to be less than 1 / 5 of the maximum stroke of the slider (54) when the rope is tensioned; the number of protection net monitoring sensors (5) and the rockfall protection net anchor points corresponding to the ropes are provided according to the rockfall protection net area to be monitored; the micro switches (57) of all protection net monitoring sensors (5) are connected in series and then electrically connected to a backup battery; 2) After the installation is completed, the power supply of the protection net monitoring sensor (5) is turned on, and the main controller initializes each module and reads the data value of each strain gauge driving module as a reference value; 3) The main controller reads the data of the strain gauge drive module in real time and subtracts the reference value to obtain the change value. When the change value exceeds the set reporting threshold, the main controller reads the position and time information of the GPS module and immediately sends a report to the monitoring station together with the change value through the wireless communication module; when the change value does not exceed the set reporting threshold, the main controller reads the position and time information of the GPS module and periodically sends a report to the monitoring station together with the change value through the wireless communication module; 4) The main controller detects the closed state of the micro switch (57) of each protection net monitoring sensor (5) in real time. When the micro switches (57) of all protection net monitoring sensors (5) are closed, the alarm flag is triggered. The main controller immediately reads the location and time information of the GPS module and sends a report together with the alarm triggering flag information to the monitoring station and the roadside warning station through the wireless communication module; After receiving the trigger sign information, the roadside warning station will immediately issue an audible and visual alarm and promptly display text on the display screen to remind passers-by of the geological disaster collapse information ahead.

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