Portable automatic spraying equipment for mobile dust fall of tunnel
By designing an automatic sprinkler system including a mobile body, a sprinkler system and a control system, the problem of poor dust reduction effect in tunnels is solved, a wide sprinkler range and convenient mobility are achieved, and the dust reduction effect in tunnels is improved.
Patent Information
- Application Number
- CN202423163427.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The existing tunnel dust suppression spray device has a simple design and structure, a small spraying area, and is not easy to move in the tunnel, resulting in limited dust suppression effect.
An automatic sprinkler system is designed, which includes a mobile body and support system, a sprinkler system and a control system. The sprinkler device can rotate and move along a track, forming a ring-shaped sprinkler area through multiple nozzles, and realizes automatic spraying in combination with a water supply module and a control system.
It achieves a wide spraying range and convenient mobility, improves the dust reduction effect in the tunnel, saves manpower and financial resources, and solves the shortcomings of existing equipment.
Smart Images

Figure CN223387374U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnels. Background Art
[0002] During construction in tunnels, due to their enclosed interiors and poor ventilation, dust builds up inside, hindering construction progress and seriously affecting the health of workers. Therefore, water sprinklers are often installed within tunnels to reduce dust. However, existing tunnel dust reduction sprinklers are simple in design and construction, resulting in a small spraying area, limited dust reduction effectiveness, and inconvenient movement within the tunnel. Utility Model Content
[0003] In view of the above problems, the utility model provides an automatic spraying device for portable mobile dust reduction in tunnels.
[0004] In order to achieve the above objectives, the present invention provides the following technical solutions:
[0005] An automatic sprinkler device for portable dust reduction in tunnels, comprising: a mobile vehicle body and support system, a sprinkler system, and a control system, wherein:
[0006] The mobile vehicle and support system have an outer shape that adapts to the tunnel to facilitate movement within the tunnel and form an annular spraying working area, and are also used to install the spraying system and control system;
[0007] The spray system includes several strip-shaped movable modules and a piping system, and a movable spray device 3 is provided in each strip-shaped movable module;
[0008] Each spray device is designed with multiple nozzle action points in a linear shape, and the spray device is designed with a rotating shaft 3-1, which can rotate and spray when driven by the spray motor 15;
[0009] Among them, each strip-shaped mobile module is distributed around the annular mobile body and the bracket system, forming multiple spraying points and arranging a circumferentially converging spray effect;
[0010] The pipeline system is connected to the water source outside the tunnel and various sprinkler devices to ensure the water supply of the entire mobile body and support system spraying working area;
[0011] The control system is connected to the spraying system and is used to control the spraying of the spraying device.
[0012] Furthermore, the mobile body and support system includes a mobile body and a mobile support:
[0013] The mobile body includes a wheel train;
[0014] The mobile bracket includes a mounting plate 7, an arch bracket 8, and a connecting piece 9, wherein:
[0015] There are two mounting plates 7, which are arranged opposite to each other, and a set of mounting plate rollers 4 are assembled on the lower side of the mounting plates 7;
[0016] There are two arched brackets 8, which are connected to the upper parts of the two ends of the two oppositely arranged mounting plates 7;
[0017] The bottoms of both ends of the connecting member 9 are fixedly connected to the two arched brackets 8 respectively;
[0018] The mounting plate 7, the arched support 8 and the connecting piece 9 together form a movable support system.
[0019] Furthermore, the strip-shaped moving module of the spraying system includes a track 11 and a support frame 13, wherein:
[0020] The track 11 is fixed on the mobile vehicle body and the support system; the support frame 13 is set on the track 11, and the support frame 13 is equipped with a small roller 14. The small roller 14 moves along the length direction of the track 11. The spray device 3 is installed on the support frame 13, so that the spray device 3 can be moved along the length direction of the track 11 through the small roller 14. When the spray device moves along the length direction of the track, it is kept stable in the width direction of the track by the support frame 13.
[0021] The rotating shaft 3-1 and bearings of the spray device are installed on the support frame 13 in the strip-shaped moving module;
[0022] The spray motor 15 that drives the rotating shaft 3-1 of the spray device is installed on the support frame 13 in the strip-shaped moving module;
[0023] The small roller 14 is provided with a travel motor, and is driven to move by the travel motor.
[0024] Furthermore, the strip-shaped moving module of the spraying system also includes a limiting module for sensing the position of the spraying device moving within the track; the limiting module is implemented by a distance sensor, including a distance transmitting end and a distance receiving end, one of which is installed at the end of the length direction of the track 11, and the other is installed at the end of the support frame 13 on the track 11.
[0025] Furthermore, there are three groups of bar-shaped mobile modules, which are respectively installed on the top and two sides of the mobile bracket;
[0026] Two groups of strip-shaped mobile modules are respectively arranged on the mounting plates 7 on both sides of the mobile bracket. Specifically, a groove 7-1 is opened in the middle of the mounting plate 7 for arranging the strip-shaped mobile modules, wherein the spray device extends outside the groove and is located in the annular spray working area of the mobile body and the bracket system;
[0027] A group of strip-shaped mobile modules are arranged on the top of the mobile bracket through a connecting piece 9. Specifically, a slot is opened on the bottom surface of the connecting piece 9, and the rotating shaft of the spray device passes through the slot and extends to the annular spray working area of the mobile body and the bracket system.
[0028] Furthermore, the spray system further includes a water supply module, which stores water from an external water source through a pipeline system to the vehicle-mounted water supply module, and the water supply module is connected to each spray device to provide a vehicle-mounted water source for the mobile vehicle body and the support system spraying working area;
[0029] The water supply module includes a water collecting box 12, a first water collecting pipe 1, a second water collecting pipe 2 and connecting pipes, wherein:
[0030] The water collecting tank 12 is installed on the top of the support system, and the water collecting tank 12 is connected to an external water source;
[0031] The first water collecting pipe 1 is installed at the lower part of the top wall of the arch support 8 and is connected to the water collecting box 12 through a connecting pipe. The first water collecting pipe 1 is connected to the spraying device below the top of the movable support to supply water to the spraying device;
[0032] There are two second water collecting pipes 2, which are respectively installed on the sides of the two mounting plates 7 and connected to the external water source. The other end of the second water collecting pipe 2 is connected to the spraying device on the side of the mounting plate 7 to connect the spraying device to the water source.
[0033] Furthermore, a rotary seal is provided between the first water collecting pipe, the second water collecting pipe and the spraying device.
[0034] Furthermore, electronic valves are provided on the first water collecting pipe and the second water collecting pipe, and are switched on and off and flow rate regulated by the control system.
[0035] Furthermore, the control system is connected to the spraying system and is used to control the spraying operation of the spraying device, including the rotation of the spraying device and the movement back and forth along the length direction of the track of the strip-shaped moving module, and the turning on and off of the spraying;
[0036] The control system includes a control mainboard, a power supply, a motor drive module, and a human-machine panel. The motor drive module and the human-machine panel are connected to the control mainboard, and the power supply supplies power to the entire control mainboard.
[0037] The output of the limit module is connected to the input of the control mainboard, so that the system can sense the position of the sprinkler device in the track;
[0038] The travel motor that drives the small roller 14 to rotate, and the spray motor 15 that drives the rotating shaft 3-1 of the spray device, are respectively connected to the output of the control mainboard through the motor drive module;
[0039] An electronic valve is provided on the piping system to control the on-off of the water supply, and the input of the electronic valve is connected to the output of the control mainboard;
[0040] The control mainboard adopts embedded design;
[0041] The control system sets the spraying operation of the strip moving module through the firing program.
[0042] Furthermore, a dust concentration sensor and a smoke sensor are provided on the lower side of the support frame 13 of the strip-shaped moving module, for monitoring the dust concentration and smoke concentration inside the tunnel respectively.
[0043] Advantages and beneficial effects of this application:
[0044] The equipment in this application has the advantages of being portable, automated, and having a wide spraying range. It saves manpower and financial resources and is highly practical. It solves the problem that existing tunnel dust reduction spraying equipment is not portable enough during use and has a small spraying range and cannot effectively suppress dust in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS
[0045] Figure 1 The present invention is a structural schematic diagram of an automatic sprinkler device for portable mobile dust reduction in tunnels according to an embodiment.
[0046] Figure 2 Schematic diagram of the structure of the mobile vehicle body and the support system in the embodiment.
[0047] Figure 3 for Figure 1 A magnified view of the structure at point A in the middle.
[0048] Figure 4 Schematic diagram of the control system principle in the embodiment.
[0049] Reference numerals:
[0050] First water collecting pipe 1; second water collecting pipe 2; water collecting tank 12;
[0051] Spraying device 3; rotating shaft 3-1;
[0052] Mounting plate roller 4; mounting plate 7; groove 7-1; guardrail 7-2; arch bracket 8; connecting piece 9; arc bracket 10;
[0053] Track 11; support frame 13; small roller 14; spray motor 15; coupling 16; control system 17. DETAILED DESCRIPTION
[0054] The technical solution provided by this application will be further described below in conjunction with specific embodiments and accompanying drawings. The advantages and features of this application will become more apparent with reference to the following description.
[0055] Example 1
[0056] like Figure 1 、 Figure 2 As shown, the embodiment of the present invention provides an automatic sprinkler device for portable mobile dust reduction in tunnels, comprising: a mobile body and a support system, a sprinkler system, and a control system, wherein:
[0057] The mobile vehicle body and support system has a shape that adapts to the tunnel to facilitate movement in the tunnel and form a ring-shaped spraying working area. It is also used to install the spraying system and control system.
[0058] The spray system includes several bar-shaped movable modules and a piping system (not shown in the figure). A movable spray device 3 is provided in each bar-shaped movable module.
[0059] Each spray device is designed with multiple nozzle action points in a linear shape, and the spray device is designed with a rotating shaft 3-1, which can rotate and spray when driven by the spray motor 15;
[0060] Among them, each strip-shaped mobile module is distributed around the annular mobile body and the bracket system, forming multiple spraying points and arranging a circumferentially converging spray effect;
[0061] The piping system connects to the tunnel's external water source and various sprinkler systems, ensuring water supply to the entire mobile vehicle and support system's spraying work area. As an alternative embodiment, the sprinkler system can also be equipped with a water supply module. The water supply module is then connected to the various sprinkler systems to provide an onboard water source for the mobile vehicle and support system's spraying work area.
[0062] The control system is connected to the sprinkler system and is used to control the spraying of the sprinkler device.
[0063] Furthermore, the mobile body and support system includes a mobile body and a mobile support:
[0064] The mobile vehicle body includes a wheel system, such as mounting plate rollers 4.
[0065] The movable bracket includes a mounting plate 7, an arch bracket 8, and a connecting member 9, wherein: there are two mounting plates 7, which are arranged opposite to each other, and a group of mounting plate rollers 4 are assembled on the lower side of the mounting plate 7; there are two arch brackets 8, which are connected to the upper parts of the two ends of the two oppositely arranged mounting plates 7; the bottoms of the two ends of the connecting member 9 are respectively fixedly connected to the two arch brackets 8; the mounting plates 7, arch brackets 8, and connecting members 9 together form a movable bracket system.
[0066] Furthermore, in order to improve the stability and bearing capacity of the support system, a number of arc-shaped supports 10 can be added between the connecting piece 9 of the mobile support and the mounting plates 7 on both sides, such as Figure 2The arc-shaped bracket 10, the connecting member 9 and the mounting plate 7 can be connected by welding.
[0067] Workers can walk in the tunnel by pushing the wheel system.
[0068] Furthermore, the strip-shaped moving module of the spraying system includes a track 11 and a support frame 13, wherein:
[0069] The track 11 is fixed on the mobile body and the support system; the support frame 13 is set on the track 11, and the support frame 13 is equipped with a small roller 14. The small roller 14 moves along the length of the track 11. The spray device 3 is installed on the support frame 13, so that the spray device 3 can be moved along the length of the track 11 (the longitudinal direction of the mobile body and the support system) by the small roller 14. When the spray device moves along the length of the track, it is kept stable in the width direction of the track by the support frame 13.
[0070] The rotating shaft 3-1 and bearings (not shown) of the spray device are mounted on the support frame 13 in the bar-shaped moving module. As an embodiment, whether a coupling or a reducer is provided between the rotating shaft of the spray device and the output shaft of the spray motor is a mature technology and will not be described in detail.
[0071] The spray motor 15 that drives the rotating shaft 3-1 of the spray device is installed on the support frame 13 in the strip-shaped moving module;
[0072] The small roller 14 is provided with a travel motor and can be driven to move by the travel motor (not shown in the figure).
[0073] The bar-shaped moving module also includes a position limiting module for sensing the position of the spray device within the track and subsequently controlling the direction of movement of the small roller 14 within the track. Furthermore, the position limiting module can be implemented using a distance sensor, including a distance transmitter and a distance receiver, one of which is installed at the longitudinal end of the track 11 and the other is installed at the end of the support frame 13 on the track 11.
[0074] As an embodiment, for example and not limitation, there are three groups of bar-shaped moving modules, which are respectively installed on the top and two sides of the moving bracket.
[0075] Specifically, two groups of bar-shaped moving modules are respectively arranged on the mounting plates 7 on both sides of the moving bracket. Figure 3 As shown, a groove 7-1 is defined in the middle of the mounting plate 7 for mounting the bar-shaped mobile module. A track is positioned at the bottom of the groove, and the spray device extends beyond the groove, within the annular spraying area of the mobile vehicle and support system. Furthermore, guardrails 7-2 are positioned at both ends of the groove in the mounting plate 7 to prevent the support frame 13 of the bar-shaped mobile module from falling out of the groove.
[0076] Specifically, the strip-shaped moving module is attached to the top of the mobile support via a connector 9. The track is mounted on this connector 9, and a slot is defined on its underside. The spray device's rotating shaft passes through this slot and extends into the annular spraying area of the mobile vehicle and support system. The slot also provides a path for the spray device's rotating shaft to move along the length of the track.
[0077] Preferably, the strip-shaped moving modules installed on the two mounting plates 7 are arranged bilaterally symmetrically.
[0078] Furthermore, the water supply module of the sprinkler system includes a water collecting tank 12, a first water collecting pipe 1, a second water collecting pipe 2 and connecting pipes.
[0079] The water collecting tank 12 is installed on the top of the bracket system, and the water collecting tank 12 is connected to the external water source; as an embodiment, the connecting member 9 adopts a frame three-dimensional structure, the water collecting tank 12 is installed on the top of the connecting member 9, and an accommodating space is reserved between the bottom of the water collecting tank 12 and the bottom surface of the connecting member 9 for installing the strip-shaped mobile module;
[0080] The first water collecting pipe 1 is installed at the lower part of the top wall of the arch support 8 and is connected to the water collecting tank 12 through a connecting pipe. The first water collecting pipe 1 is connected to the spraying device below the top of the movable support to supply water to the spraying device. The provision of the water collecting tank 12 can improve the water pressure of the first water collecting pipe 1;
[0081] There are two second water collecting pipes 2, which are respectively installed on the sides of the two mounting plates 7 and connected to the external water source. The other end of the second water collecting pipe 2 is connected to the spraying device on the side of the mounting plate 7 to connect the spraying device to the water source.
[0082] Furthermore, a rotary seal is provided between the first water collecting pipe 1, the second water collecting pipe 2 and the spraying device.
[0083] Preferably, the first water collecting pipe 1 is arranged in an arc shape and is installed on the lower part of the top wall of the movable bracket along the arch bracket 8.
[0084] Furthermore, electronic valves are provided on the first water collecting pipe 1 and the second water collecting pipe 2, and are switched on and off and flow rate regulated by the control system.
[0085] Furthermore, the control system is connected to the spraying system to control the spraying operation of the spraying device, including the rotation of the spraying device and the movement back and forth along the track length direction of the strip moving module, turning on and off the spraying, etc.
[0086] like Figure 4 As shown, the control system includes a control mainboard, a power supply, a motor drive module, and a human-machine panel. The motor drive module and the human-machine panel are connected to the control mainboard, and the power supply supplies power to the entire control mainboard.
[0087] The output of the limit module is connected to the input of the control mainboard, which is used for the system to sense the position of the spray device in the track, so as to further realize the spray device moving back and forth along the track length direction of the strip moving module;
[0088] The travel motor (not shown) that drives the small roller 14 to rotate, and the spray motor 15 that drives the rotating shaft 3-1 of the spray device, are respectively connected to the output of the control mainboard through the motor drive module;
[0089] An electronic valve (not shown in the figure) is set on the piping system to control the water supply on and off. The input of the electronic valve is connected to the output of the control mainboard;
[0090] The control motherboard can adopt an embedded design. As an embodiment, for example and not limitation, it is implemented based on the STM32F103VET6 microcontroller. The specific circuit diagram is a mature technology, and its pin connection method is not described in detail.
[0091] By burning the program in the control system, the spraying operation of the bar movable module can be set, including controlling the rotation and speed of the spraying device, controlling the small roller 14 to move back and forth along the track length direction of the bar movable module to realize the spraying device to move back and forth along the track length direction of the bar movable module, and controlling the opening and closing of the electronic valve.
[0092] The basic working principle of the above-mentioned automatic sprinkler equipment for portable mobile dust reduction in tunnels:
[0093] During operation, the control system controls the spray motor to rotate the spray device's rotating shaft 3-1, increasing the spray area. Furthermore, the control system controls the travel motor to drive the small roller 14 back and forth along the length of the track 11, thereby moving the spray device back and forth along the track, further increasing the spray range. The coordinated operation of multiple spray devices above and below enables multi-directional spraying, effectively reducing dust.
[0094] In addition, due to the use of a mobile vehicle body, the staff can conveniently push the automatic sprinkler equipment to move in the tunnel under the action of the mounting plate roller 4.
[0095] In addition, a dust concentration sensor and a smoke sensor can be set on the lower side of the support frame 13 of the strip-shaped moving module to monitor the dust concentration and smoke concentration inside the tunnel respectively to assist in dust reduction measures.
[0096] The above description is only a description of the preferred embodiments of the present application and does not limit the scope of the present application. Any changes or modifications made by any person skilled in the art based on the above disclosed technical content should be regarded as equivalent valid embodiments and fall within the scope of protection of the technical solution of the present application.
Claims
1. An automatic sprinkler device for portable mobile dust reduction in tunnels, characterized in that: include: Mobile vehicle body and support system, spray system, control system, including: The mobile vehicle and support system have an outer shape that adapts to the tunnel to facilitate movement within the tunnel and form an annular spraying working area, and are also used to install the spraying system and control system; The spraying system comprises a plurality of strip-shaped movable modules and a pipeline system, wherein a movable spraying device (3) is provided in each strip-shaped movable module; Each spraying device is designed with a plurality of linear nozzle action points, and the spraying device is also designed with a rotating shaft (3-1), which can rotate and spray when driven by a spraying motor (15); Among them, each strip-shaped mobile module is distributed around the annular mobile body and the bracket system, forming multiple spraying points and arranging a circumferentially converging spray effect; The pipeline system is connected to the water source outside the tunnel and various sprinkler devices to ensure the water supply of the entire mobile body and support system spraying working area; The control system is connected to the spraying system and is used to control the spraying of the spraying device.
2. The portable automatic sprinkler for dust reduction in tunnels according to claim 1, characterized in that: The mobile vehicle and support system includes a mobile vehicle and a mobile support: The mobile body includes a wheel train; The mobile bracket comprises a mounting plate (7), an arch bracket (8), and a connecting piece (9), wherein: There are two mounting plates (7) arranged opposite to each other, and a set of mounting plate rollers (4) are mounted on the lower side of the mounting plates (7); There are two arched brackets (8), which are connected to the upper parts of the two ends of the two mounting plates (7) arranged opposite to each other; The bottoms at both ends of the connecting member (9) are fixedly connected to the two arch supports (8) respectively; The mounting plate (7), the arched bracket (8), and the connecting piece (9) together form a movable bracket system.
3. The portable automatic sprinkler for dust reduction in tunnels according to claim 1, characterized in that: The spray system, wherein the strip-shaped moving module comprises a track (11) and a support frame (13), wherein: The track (11) is fixed on the mobile vehicle body and the support system; the support frame (13) is arranged on the track (11), and the support frame (13) is equipped with a small roller (14), and moves along the length direction of the track (11) through the small roller (14); the spraying device (3) is installed on the support frame (13), so that the spraying device (3) can be moved along the length direction of the track (11) through the small roller (14), and the spraying device is kept stable in the width direction of the track by the support frame (13) when moving along the length direction of the track; The rotating shaft (3-1) and bearing of the spraying device are installed on the support frame (13) in the strip-shaped moving module; A spray motor (15) driving the rotating shaft (3-1) of the spray device is mounted on a support frame (13) in the strip-shaped moving module; The small roller (14) is provided with a travel motor and is driven to move by the travel motor.
4. The portable automatic sprinkler for dust reduction in tunnels according to claim 3, characterized in that: The strip-shaped moving module of the spraying system further includes a limit module for sensing the position of the spraying device when it moves within the track; The position limiting module is implemented by using a distance sensor, comprising a distance transmitting end and a distance receiving end, one of which is installed at the end of the track (11) in the longitudinal direction, and the other is installed at the end of the support frame (13) on the track (11).
5. The portable automatic sprinkler for dust reduction in tunnels according to claim 2, characterized in that: There are three groups of bar-shaped mobile modules, which are respectively installed on the top and two sides of the mobile bracket; Two groups of strip-shaped moving modules are respectively arranged on the mounting plates (7) on both sides of the mobile bracket. Specifically, a groove (7-1) is opened at the middle position of the mounting plate (7) for arranging the strip-shaped moving modules, and the spray device extends outside the groove and is located in the annular spraying working area of the mobile body and the bracket system; A group of bar-shaped moving modules are arranged on the top of the moving bracket through a connecting member (9), specifically: a track is arranged on the connecting member (9), a slot is opened on the bottom surface of the connecting member (9), and a rotating shaft of the spray device passes through the slot and extends to the annular spray working area of the mobile vehicle body and the bracket system.
6. The portable automatic sprinkler for dust reduction in tunnels according to claim 2, characterized in that: The spray system also includes a water supply module, which stores water from an external water source through a pipeline system to the vehicle-mounted water supply module. The water supply module is connected to each spray device to provide a vehicle-mounted water source for the mobile vehicle body and the support system spraying working area; The water supply module comprises a water collecting tank (12), a first water collecting pipe (1), a second water collecting pipe (2) and connecting pipes, wherein: The water collecting tank (12) is installed on the top of the support system, and the water collecting tank (12) is connected to an external water source; The first water collecting pipe (1) is installed at the lower part of the top wall of the arch support (8) and is connected to the water collecting box (12) through a connecting pipe. The first water collecting pipe (1) is connected to the spraying device below the top of the movable support to supply water to the spraying device. There are two second water collecting pipes (2), which are respectively installed on the sides of the two mounting plates (7) and connected to the external water source. The other end of the second water collecting pipe (2) is connected to the spray device on the side of the mounting plate (7) to connect the spray device to the water source.
7. The portable automatic sprinkler for dust reduction in tunnels according to claim 6, characterized in that: A rotary seal is provided between the first water collecting pipe, the second water collecting pipe and the spraying device.
8. The portable automatic sprinkler for dust reduction in tunnels according to claim 6, characterized in that: Electronic valves are provided on the first water collecting pipe and the second water collecting pipe, and are switched on and off and flow rate regulated by the control system.
9. The portable automatic sprinkler for dust reduction in tunnels according to claim 4, characterized in that: The control system is connected to the spraying system and is used to control the spraying operation of the spraying device, including the rotation of the spraying device and the back and forth movement along the length direction of the track of the strip-shaped moving module, and the opening and closing of the spraying; The control system includes a control mainboard, a power supply, a motor drive module, and a human-machine panel. The motor drive module and the human-machine panel are connected to the control mainboard, and the power supply supplies power to the entire control mainboard. The output of the limit module is connected to the input of the control mainboard, so that the system can sense the position of the sprinkler device in the track; The travel motor for driving the small roller (14) to rotate, and the spray motor (15) for driving the rotating shaft (3-1) of the spray device, are respectively connected to the output of the control main board through the motor drive module; An electronic valve is provided on the piping system to control the on-off of the water supply, and the input of the electronic valve is connected to the output of the control mainboard; The control mainboard adopts embedded design; The control system sets the spraying operation of the strip moving module through the firing program.
10. The portable automatic sprinkler for dust reduction in tunnels according to claim 3, characterized in that: A dust concentration sensor and a smoke sensor are provided on the lower side of the support frame (13) of the strip-shaped mobile module, and are used to monitor the dust concentration and smoke concentration inside the tunnel respectively.