Buried urban tunnel waterlogging safety monitoring device based on pressure water level sensor

Abstract

The utility model discloses a buried urban tunnel waterlogging safety monitoring device based on a pressure water level sensor, which comprises a shell with a top opening, a top cover covers the top of the shell, a stress plate made of polyurethane materials is embedded in the top cover, a supporting column is upwards connected to the bottom wall of the shell below the stress plate, the supporting column is connected with a supporting plate, and the supporting plate is connected with a water level sensor. The supporting plate bears the pressure water level sensor, and the stress plate presses the top of the pressure water level sensor. The top cover is downwards connected with a wireless communication module, a power supply module is further arranged in the shell, and the power supply module is connected with the pressure water level sensor and the wireless communication module through a power supply line. The pressure water level sensor is connected with the wireless communication module through a signal line; the bottom of the tunnel side wall is concaved outwards to form a water permeable groove, the water permeable groove extends downwards to the position below the ground to form a mounting groove, the shell is arranged in the mounting groove, and the top cover is flush with the tunnel ground. According to the utility model, the advantages of corrosion resistance, light weight, low cost, electromagnetic interference resistance and the like of the pressure water level sensor are utilized, the existing defects of the pressure water level sensor in tunnel water level monitoring are avoided, and the pressure water level sensor can stably work for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of urban flood prevention, in particular to a tunnel waterlogging monitoring technology. Background Art

[0002] Urban waterlogging refers to the phenomenon that the city’s drainage system is unable to promptly drain water caused by heavy or continuous rainfall, which has a multi-faceted impact on the urban environment and residents’ lives, and even endangers the life, health and safety of travelers.

[0003] Urban tunnels are one of the places most prone to waterlogging. Water accumulation in tunnels can cause vehicles to slip and lose control, water to enter the engine, and other problems. It may not only cause traffic jams, but also endanger the life, health and safety of passers-by when the water depth is large. Therefore, it is necessary to monitor the water level in urban tunnels.

[0004] Existing monitoring technologies include:

[0005] 1. The disadvantage of ultrasonic liquid level sensor is that in an environment with high humidity, dust or water mist, the ultrasonic signal is disturbed, affecting the measurement accuracy.

[0006] 2. Radar level sensor. The disadvantage is that it is expensive and requires a good installation position and angle to avoid interference from reflected waves, which may cause position interference with other tunnel equipment.

[0007] 3. The disadvantage of the float level sensor is that it has low accuracy and is easily stuck by debris.

[0008] 4. Laser sensor. Its disadvantages are high cost, sensitivity to water reflection characteristics, different water qualities (color, suspended matter, turbidity, etc.) may produce different measurement results, and it is sensitive to dust, smoke, and water mist. These factors affect the reflection and propagation of lasers and the accuracy of measurement results.

[0009] 5. Pressure water level sensor.

[0010] The pressure water level sensor can convert liquid pressure into a water level height signal. It has the advantages of high precision and high sensitivity, good long-term stability, and can obtain real-time water levels. The defects are also obvious. The pressure water level sensor needs to contact water to sense changes in water pressure. The sensor is exposed and easily affected by external factors. Although the pressure water level sensor will be arranged near the side wall of the tunnel, pedestrians or vehicles may also press on the pressure water level sensor, which may be physically damaged, or at least affect the accuracy of the measurement. If the pressure water level sensor is enclosed, it will form an obstacle at the side wall of the tunnel.

[0011] The applicant has improved the technology of using pressure water level sensors to monitor tunnel water levels. There are two improvement ideas: one is underground installation and the other is wall-mounted installation.

[0012] Compared with the wall-mounted installation, the underground installation (the applicant's idea is to install it under the side wall) has the advantages of being more concealed and less likely to be damaged by contact with foreign objects. The wall-mounted installation has the advantages of conveniently issuing sound and light warning information and being less likely to be blocked by the water inlet structure than the underground installation. The utility model adopts the first improvement idea, that is, the improvement idea of ​​underground installation. Utility Model Content

[0013] The utility model aims to provide an underground urban tunnel waterlogging safety monitoring device based on a pressure water level sensor, which utilizes the advantages of the pressure water level sensor and avoids the defects of the pressure water level sensor being exposed and susceptible to physical damage.

[0014] To achieve the above-mentioned purpose, the utility model of the underground urban tunnel waterlogging safety monitoring device based on the pressure water level sensor comprises a shell with an open top, a top cover is provided on the top of the shell, and a force-bearing plate made of polyurethane material is embedded in the top cover;

[0015] The bottom wall of the shell below the force-bearing plate is connected upward with a support column, the support column is connected with a support plate, the support plate carries the pressure water level sensor, and the force-bearing plate is pressed on the top of the pressure water level sensor; the top cover is connected downward with a wireless communication module;

[0016] A power supply module and an electric control device are also provided in the shell. The power supply module is connected to the electric control device, the pressure water level sensor and the wireless communication module through a power supply line; the pressure water level sensor and the wireless communication module are both connected to the electric control device through a signal line;

[0017] The bottom of the tunnel side wall is sunken outward to form a water-permeable groove, which extends downward to below the ground to form an installation groove. The shell is arranged in the installation groove and the top cover is flush with the tunnel ground.

[0018] A grille is provided at the opening of the water permeable trough toward the interior of the tunnel.

[0019] The top cover is downwardly connected with a GPS module, the GPS module is connected with the power supply module through a power supply line, and the GPS is connected with the electric control device through a signal line.

[0020] The power supply lines between the power supply module and the pressure water level sensor, between the power supply module and the GPS module, between the power supply module and the wireless communication module, and between the power supply module and the electric control device all have redundant lengths and are all provided with connectors.

[0021] The utility model has the following advantages:

[0022] Since the shell is installed in the installation groove, and the installation groove is located below the side wall of the tunnel, it is impossible for pedestrians or vehicles to run over the utility model when passing, and road debris will not cause physical damage to the utility model, thereby protecting the pressure water level sensor. The function of the permeable groove is to allow the accumulated water on the tunnel floor to enter and form water pressure on the top cover and the load-bearing plate. Based on the principle of the communicating vessel, the water pressure on the load-bearing plate is proportional to the height of the accumulated water in the tunnel, and does not affect the water level measured by the pressure water level sensor. Since the pressure water level sensor is set below the top cover (load-bearing plate), it does not come into contact with the outside world, and will not come into contact with water, debris, dust or smoke and other substances from the outside world, thereby effectively protecting the pressure water level sensor and ensuring that the pressure water level sensor can work stably for a long time.

[0023] The arrangement of the support column and the support plate ensures that the pressure water level sensor will not deform downward when under pressure, thereby offsetting part of the force and ensuring the accuracy of the measurement.

[0024] The utility model not only utilizes the advantages of the pressure water level sensor, such as corrosion resistance, light weight, low cost and resistance to electromagnetic interference, but also avoids the existing defects of the pressure water level sensor in tunnel water level monitoring.

[0025] The grille net can block debris from entering the water permeable groove without blocking water from entering the water permeable groove. Therefore, it does not affect the function of the pressure water level sensor to detect the water level, and prevents debris from entering the water permeable groove and preventing the water permeable groove from being blocked by debris. In long-term use, it is ensured that the utility model can stably realize the function of monitoring the water level.

[0026] The GPS module can provide GPS location information, which is convenient for remote staff to monitor the signals of the utility model installed in various tunnels and correspond the water level signal to the geographical location. The GPS module and the wireless communication module are both installed on the top cover, which has a relatively optimal communication position in the use environment.

[0027] The power supply lines all have redundant lengths and are equipped with connectors, which facilitate disconnecting the power supply lines when stored (separating the male and female ends of the connectors to disconnect the power supply lines), and plugging the male and female ends of the connectors together before use to connect the power supply lines. The redundant length is to facilitate connecting the connectors before the top cover is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of an underground urban tunnel flooding safety monitoring device based on a pressure water level sensor. To avoid cluttering the drawing, the communication line between the electronic control device and the pressure water level sensor is not shown.

[0029] Figure 2 yes Figure 1 Top view of the .

[0030] Figure 3This is a structural schematic diagram of an underground urban tunnel waterlogging safety monitoring device based on a pressure water level sensor installed in an installation groove on the tunnel side wall.

[0031] Figure 4 It is a schematic diagram of the electric control structure of the utility model. DETAILED DESCRIPTION

[0032] like Figures 1 to 4 As shown, the underground urban tunnel waterlogging safety monitoring device based on the pressure water level sensor of the utility model comprises a housing 1 with an open top, a top cover 2 made of a rigid material such as glass fiber reinforced plastic is provided on the top of the housing 1, and a force-bearing plate 3 made of a polyurethane material is embedded in the top cover 2.

[0033] The bottom wall of the shell 1 below the force-bearing plate 3 is upwardly connected to a support column 4, the support column 4 is connected to a support plate 5, the support plate 5 carries the pressure water level sensor 6, and the force-bearing plate 3 is pressed on the top of the pressure water level sensor 6; the top cover 2 is downwardly connected to a wireless communication module 7;

[0034] A power supply module 8 and an electronic control device 16 are also provided in the housing 1. The power supply module 8 is connected to the electronic control device 16, the pressure water level sensor 6 and the wireless communication module 7 through a power supply line; the pressure water level sensor 6 and the wireless communication module 7 are both connected to the electronic control device 16 through a signal line; the electronic control device 16 can be an integrated circuit or a single-chip microcomputer (including PLC), such as a 51 single-chip microcomputer.

[0035] The bottom of the tunnel side wall 15 is recessed outward to form a water-permeable groove 9, which extends downward to below the ground to form a mounting groove 10. The housing 1 is arranged in the mounting groove 10 and the top cover 2 is flush with the tunnel ground 14.

[0036] The power supply module 8 can be a battery, or can be powered by a power supply line at a line connection tunnel. The wireless communication module 7 preferably uses a 4G module, a 5G module, or a LORA wireless communication module.

[0037] Since the housing 1 is installed in the installation groove 10, and the installation groove 10 is located below the tunnel side wall 15, it is impossible for pedestrians or vehicles to pass over the utility model when passing, and road debris will not cause physical damage to the utility model, thereby protecting the pressure water level sensor 6. The function of the permeable groove 9 is to form water pressure on the top cover 2 and the force plate 3 after the accumulated water on the tunnel floor 14 enters. Based on the principle of the communicating vessel, the water pressure on the force plate 3 is proportional to the height of the accumulated water in the tunnel, and does not affect the water level measured by the pressure water level sensor 6. Since the pressure water level sensor 6 is arranged below the top cover 2 (force plate 3), it does not contact the outside world, and will not contact water, debris, dust or smoke and other substances in the outside world, thereby effectively protecting the pressure water level sensor 6 and ensuring that the pressure water level sensor 6 can work stably for a long time.

[0038] The arrangement of the support column 4 and the support plate 5 ensures that the pressure water level sensor 6 will not deform downward when under pressure, thereby offsetting a part of the force, thereby ensuring the accuracy of the measurement.

[0039] The utility model not only utilizes the advantages of the pressure water level sensor 6 such as corrosion resistance, light weight, low cost and anti-electromagnetic interference, but also avoids the existing defects of the pressure water level sensor 6 in tunnel water level monitoring.

[0040] A grille 11 is provided at the opening of the water-permeable groove 9 toward the inside of the tunnel. The grille 11 can prevent debris from entering the water-permeable groove 9, but will not prevent water from entering the water-permeable groove 9, thus not affecting the function of the pressure water level sensor 6 to detect the water level, and preventing debris from entering the water-permeable groove 9, preventing the water-permeable groove 9 from being blocked by debris, and ensuring that the utility model can stably realize the function of monitoring the water level in long-term use.

[0041] The top cover 2 is downwardly connected with a GPS module 12 , the GPS module 12 is connected to the power supply module 8 via a power supply line, and the GPS is connected to the electric control device 16 via a signal line.

[0042] The GPS module 12 and the wireless communication module 7 are both mounted on the top cover 2 and have a relatively optimal communication position in the use environment.

[0043] The GPS module 12 can provide GPS location information, which is convenient for remote workers to monitor the signals of the utility model installed in various tunnels and correspond the water level signals with the geographical locations.

[0044] The power supply lines between the power supply module 8 and the pressure water level sensor 6 , between the power supply module 8 and the GPS module 12 , between the power supply module 8 and the wireless communication module 7 , and between the power supply module and the electronic control device 16 all have redundant lengths and are all provided with connectors 13 .

[0045] The power supply lines all have redundant lengths and are equipped with connectors 13, which facilitate disconnecting the power supply lines in the storage state (separating the male and female ends of the connectors 13 to disconnect the power supply lines), and plugging the male and female ends of the connectors together before use to connect the power supply lines. The redundant length is to facilitate connecting the connectors 13 before the top cover 2 is closed. For the sake of neatness, the redundant lengths of the power supply lines are not shown in the figure.

[0046] When in use, a water-permeable groove 9 is provided at the bottom end of the side wall at the lowest point of the tunnel side wall 15, and a mounting groove 10 is provided downwardly from the water-permeable groove 9. Of course, the water-permeable groove 9 and the mounting groove 10 can also be directly formed by a template when pouring the tunnel side wall 15. A clamping part is provided on the edge of the top cover 2, which can be elastic and have a certain interference with the top of the shell 1.

[0047] Before putting on the top cover 2, first connect the power supply lines through the connector 13, then align the pressure water level sensor 6 with the support plate 5, cover the top cover 2 on the top of the shell 1 and clamp it, and put the shell 1 with the top cover 2 into the installation groove 10. At this time, the top cover 2 is flush with the tunnel floor 14.

[0048] During use, if there is a certain water level in the tunnel, water will enter the water-permeable groove 9 through the grid mesh 11, exerting pressure on the top cover 2 and the force-bearing plate 3 thereon. The force-bearing plate 3 is made of polyurethane material and has good waterproof performance and elasticity. The force-bearing plate 3 is deformed and transmits the water pressure to the pressure water level sensor 6. Due to the support and blocking of the support plate 5, the pressure water level sensor 6 will not move downward, so that it can accurately sense the water pressure and ensure the accuracy of the water level measurement.

[0049] The utility model can be installed in various tunnels in the city.

[0050] The wireless communication module 7 sends the received water level signal and the position signal from the GPS module 12 to the remote server of the monitoring station. The staff of the monitoring station can obtain the water level information of each tunnel through the remote server and send water level warning information in time to prevent people and vehicles from continuing to move towards tunnels with higher water levels and ensure traffic safety; at the same time, flood prevention personnel can also go to tunnels with deeper water levels in time to carry out rescue work.

[0051] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An underground urban tunnel waterlogging safety monitoring device based on a pressure water level sensor, comprising a housing with an open top, characterized in that: The top cover of the shell is provided with a top cover, and the top cover is embedded with a stress-bearing plate made of polyurethane material; The bottom wall of the shell below the force-bearing plate is connected upward with a support column, the support column is connected with a support plate, the support plate carries the pressure water level sensor, and the force-bearing plate is pressed on the top of the pressure water level sensor; the top cover is connected downward with a wireless communication module; A power supply module and an electric control device are also provided in the shell. The power supply module is connected to the electric control device, the pressure water level sensor and the wireless communication module through a power supply line; the pressure water level sensor and the wireless communication module are both connected to the electric control device through a signal line; The bottom of the tunnel side wall is sunken outwards to form a water-permeable groove, which extends downward to below the ground to form an installation groove. The shell is arranged in the installation groove and the top cover is flush with the tunnel ground.

2. The underground urban tunnel waterlogging safety monitoring device based on pressure water level sensor according to claim 1 is characterized by: A grille is provided at the opening of the water permeable trough toward the interior of the tunnel.

3. The underground urban tunnel waterlogging safety monitoring device based on pressure water level sensor according to claim 1 is characterized by: The top cover is downwardly connected with a GPS module, the GPS module is connected with the power supply module through a power supply line, and the GPS is connected with the electric control device through a signal line.

4. The underground urban tunnel waterlogging safety monitoring device based on pressure water level sensor according to claim 3 is characterized by: The power supply lines between the power supply module and the pressure water level sensor, between the power supply module and the GPS module, between the power supply module and the wireless communication module, and between the power supply module and the electric control device all have redundant lengths and are all provided with connectors.

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