Railway bridge abutment and hydrology combined monitoring device

Abstract

The invention discloses a combined monitoring device for railway bridge abutments and hydrology, relates to a hydrology monitoring device mounted below a bridge abutment, and aims to solve the problems of poor accuracy and complicated separate monitoring process of monitoring the flow velocity and the water level of a river as well as settlement and inclination of a wading pier in a conventional manual mode. The radar is used for obtaining the water flow velocity, the deformation meter is used for obtaining the deformation quantity of the pier, and the water level gauge is used for obtaining the water level height; the communication equipment transmits a water flow speed signal, a bridge pier deformation quantity signal and a water level height signal to the monitoring platform in a wireless signal form, and the monitoring platform is arranged at a far end; the monitoring platform sends an alarm signal A when the water flow speed signal is greater than the water flow speed threshold value; when the bridge pier deformation quantity signal is received, an alarm signal B is sent out; when the water flow height signal is larger than the water flow height threshold value, an alarm signal C is sent out. The beneficial effects are that the complexity of the monitoring process is reduced, and the monitoring accuracy is improved.

Description

Technical Field

[0001] This invention relates to a hydrological monitoring device installed under a beam pier. Background Technology

[0002] Railway bridges are critical infrastructure for railway transportation, and their length accounts for a significant portion of the total railway line mileage. Currently, my country has tens of thousands of railway bridges spanning rivers and lakes. When heavy rainfall during the flood season, reservoir discharges, and other factors cause river and lake water levels to rise and exceed warning levels, it poses a serious threat to the safety of railway bridges and trains on them. Furthermore, the underwater pier foundations of railway bridges are highly susceptible to damage and deterioration due to torrential rains, floods, and impacts from floating ice, leading to reduced bridge load-bearing capacity and durability, and in severe cases, endangering railway traffic safety and operational lifespan.

[0003] Existing railway bridge pier and hydrological monitoring typically relies on manual observation of water level gauges. During the flood season, this requires a large number of personnel to repeatedly patrol the line, resulting in a heavy workload, low efficiency, long inspection intervals, and difficulty in intelligent analysis. This fails to meet the informatization and intelligentization requirements of modern railway construction and operation maintenance. Given the time-consuming, labor-intensive, inaccurate, and inability to provide real-time monitoring, a bridge health monitoring system was developed. This system, comprised of servers, edge servers, inclinometers, weather stations, and surveillance cameras, monitors pier displacement, river flow velocity, and water level in real time. When monitored data exceeds set thresholds, the system triggers an alarm, allowing staff to remotely monitor the situation and take appropriate measures. This scientific approach enables more efficient and accurate monitoring of river water levels and flow velocities, as well as assessment of bridge damage, thus maintaining railway line safety and train operation stability. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of poor accuracy and complex separate monitoring processes in existing manual methods for monitoring river flow velocity, water level, and settlement and tilt of bridge piers in water-related areas. This invention proposes a joint monitoring device for railway bridge piers and hydrology.

[0005] The integrated monitoring device for railway bridge piers and hydrology described in this invention includes radar, deformation meter, water level gauge, communication equipment and monitoring platform;

[0006] The radar is used to obtain the water flow velocity;

[0007] The deformation meter is used to obtain the deformation of the bridge pier;

[0008] The water level gauge is used to obtain the water level height.

[0009] The radar's water flow velocity signal output terminal is connected to the water flow velocity signal input terminal of the communication equipment;

[0010] The pier deformation signal output terminal of the deformation meter is connected to the pier deformation signal input terminal of the communication device;

[0011] The water level height signal output terminal of the water level gauge is connected to the water level height signal input terminal of the communication equipment;

[0012] The communication device transmits water flow velocity signals, pier deformation signals, and water level height signals to the monitoring platform in the form of wireless signals. The monitoring platform is located at a remote location.

[0013] The monitoring platform is used to compare the received water flow velocity signal with a preset water flow velocity threshold, and issue an alarm signal A when the water flow velocity signal is greater than the water flow velocity threshold; the monitoring platform is used to issue an alarm signal B when it receives a bridge pier deformation signal; and the monitoring platform is also used to compare the received water flow height signal with a preset water flow height threshold, and issue an alarm signal C when the water flow height signal is greater than the water flow height threshold.

[0014] Furthermore, the communication device includes an edge computing gateway, a 4G router A, and a 4G router B;

[0015] Both the edge computing gateway and the 4G router A are located at the main body of the bridge; the water flow velocity signal output terminal of radar 1 is connected to the water flow velocity signal input terminal of the edge computing gateway; the pier deformation signal output terminal of the deformation meter is connected to the pier deformation signal input terminal of the edge computing gateway; the water level height signal output terminal of the water level gauge is connected to the water level height signal input terminal of the edge computing gateway; the edge computing gateway transmits communication signals wirelessly through the 4G router A.

[0016] The 4G router B is located at the remote end of the monitoring platform. The 4G router B is used to receive communication signals sent by the 4G router A in the form of wireless signals and send the communication signals to the monitoring platform.

[0017] Furthermore, the joint monitoring device also includes a camera;

[0018] The camera is suspended on one side of the bridge body to acquire environmental images around the bridge body, and the environmental image signal output terminal of the camera is connected to the environmental image signal input terminal of the 4G router A.

[0019] Furthermore, the joint monitoring device also includes a solar panel;

[0020] The solar panel is used to obtain electrical energy to power the camera and 4G router A.

[0021] Furthermore, the deformation meter is fixed on the surface of the bridge pier, and the deformation meter is a MEMS inclinometer with a measurement range of -90° to +90° and a measurement accuracy of 0.001°.

[0022] Furthermore, the radar is fixed on a support frame, which is suspended on one side of the bridge body, and the bottom surface of the radar is kept parallel to the water surface.

[0023] Furthermore, the water level gauge is suspended directly below the main body of the bridge, and it is a non-contact water level measurement sensor; the frequency sweep range is 24GHz - 26GHz.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] The monitoring platform acquires water flow velocity via radar and issues an alarm signal A when the water flow velocity exceeds a preset threshold. It also monitors the deformation of bridge piers in real time using a deformation meter. When a bridge pier tilts or deforms, the deformation meter outputs a deformation signal to the monitoring platform, which then issues an alarm signal B. Furthermore, the monitoring platform acquires water flow height via a water level gauge and issues an alarm signal C when the water flow height exceeds a preset threshold. This enables efficient, accurate, safe, and intelligent health monitoring of river flow velocity, water level, and the settlement and tilt of water-related bridge piers. The device simultaneously performs intelligent monitoring of river flow velocity, water level, and the settlement and tilt of water-related bridge piers, reducing the complexity of the monitoring process, improving monitoring accuracy, and maintaining the safety of railway lines and the stable operation of trains. Additionally, the railway bridge pier and hydrological monitoring device is built on an edge computing platform, integrating remote control, local management, computing, and communication functions to achieve unified management of multi-dimensional data. This device can integrate and manage the collection and communication of river water level and flow velocity, pier tilt angle and meteorological data. At the same time, it can supplement and verify the actual situation on site by combining video image information, forming a dual monitoring guarantee of "data + image". Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the principle of a joint monitoring device for railway bridge piers and hydrology as described in Specific Implementation Method 1.

[0027] Figure 2 This is a front structural schematic diagram of a combined monitoring device for railway bridge piers and hydrology in Specific Implementation Method 1.

[0028] Figure 3 This is a side view of a combined monitoring device for railway bridge piers and hydrology, as described in Specific Implementation Method 1.

[0029] Among them, 1 is radar; 2 is deformation meter; 3 is water level gauge; 4 is camera; 5 is solar panel; 6 is communication equipment; 6-1 is edge computing gateway; 6-2 is 4G router A; 6-3 is 4G router B; and 7 is monitoring platform. Detailed Implementation

[0030] Specific Implementation Method 1: Combination Figures 1 to 3 This embodiment describes a monitoring device that includes a radar 1, a deformation meter 2, a water level gauge 3, a communication device 6, and a monitoring platform 7.

[0031] The radar 1 is used to obtain the water flow velocity;

[0032] The deformation meter 2 is used to obtain the deformation of the bridge pier;

[0033] The water level gauge 3 is used to obtain the water level height;

[0034] The water flow velocity signal output terminal of the radar 1 is connected to the water flow velocity signal input terminal of the communication device 6;

[0035] The pier deformation signal output terminal of the deformation meter 2 is connected to the pier deformation signal input terminal of the communication device 6;

[0036] The water level height signal output terminal of the water level gauge 3 is connected to the water level height signal input terminal of the communication device 6;

[0037] The communication device 6 transmits the water flow velocity signal, the bridge pier deformation signal and the water level height signal to the monitoring platform 7 in the form of wireless signals. The monitoring platform 7 is set at a remote location.

[0038] The monitoring platform 7 is used to compare the received water flow velocity signal with a preset water flow velocity threshold, and to issue an alarm signal A when the water flow velocity signal is greater than the water flow velocity threshold; the monitoring platform 7 is used to issue an alarm signal B when it receives a bridge pier deformation signal; and the monitoring platform 7 is also used to compare the received water flow height signal with a preset water flow height threshold, and to issue an alarm signal C when the water flow height signal is greater than the water flow height threshold.

[0039] In this embodiment, existing radar 1 is used to collect water flow velocity signals, existing deformation meter 2 is used to collect bridge pier deformation signals on the pier surface, and existing water level gauge 3 is used to collect water level signals. This enables efficient, accurate, safe, and intelligent health monitoring of river flow velocity, water level, and the settlement and tilt of water-crossing bridge piers. Furthermore, the device simultaneously performs intelligent monitoring of river flow velocity, water level, and the settlement and tilt of water-crossing bridge piers, reducing the complexity of the monitoring process, improving the accuracy of monitoring, and maintaining the safety of railway lines and the stable operation of trains.

[0040] In this embodiment, the collected water flow velocity signal is transmitted wirelessly to the monitoring platform 7 via communication device 6. The monitoring platform 7 compares the collected water flow velocity signal with a preset water flow velocity threshold and issues an alarm signal A when the collected water flow velocity signal exceeds the threshold. The collected bridge pier deformation signal is also transmitted wirelessly to the monitoring platform 7 via communication device 6. Upon receiving the bridge pier deformation signal, the monitoring platform 7 issues an alarm signal B. The collected water flow height signal is also transmitted wirelessly to the monitoring platform 7 via communication device 6. The monitoring platform 7 compares the collected water flow height signal with a preset water flow height threshold and issues an alarm signal C when the collected water flow height signal exceeds the threshold. Radar 1, deformation meter 2, and water level gauge 3 can operate simultaneously. The monitoring platform 7 adopts a C / S architecture. C / S architecture (Client-Server Architecture) is a distributed computing model in which the client and server communicate through a network. In this architecture, the client is responsible for sending requests to the server and receiving responses from the server. The server processes client requests and returns corresponding results; the monitoring platform 7 includes both computer monitoring platform and mobile monitoring platform, which can quickly query hydrological change information and make corrections to the equipment in the application segment.

[0041] In this embodiment, alarm signals A, B, and C are used to correspond to and distinguish the water flow velocity signal, the bridge pier deformation signal, and the water flow height signal; the three different alarm signals are used to drive alarm lights of different colors or to drive different alarm sounds.

[0042] Specific Implementation Method 2: This implementation method further defines the joint monitoring device for railway bridge piers and hydrology described in Specific Implementation Method 1. In this implementation method, the communication device 6 includes an edge computing gateway 6-1, a 4G router A6-2, and a 4G router B6-3.

[0043] Both the edge computing gateway 6-1 and the 4G router A6-2 are located at the main body of the bridge; the water flow velocity signal output terminal of the radar 1 is connected to the water flow velocity signal input terminal of the edge computing gateway 6-1; the pier deformation signal output terminal of the deformation meter 2 is connected to the pier deformation signal input terminal of the edge computing gateway 6-1; the water level height signal output terminal of the water level gauge 3 is connected to the water level height signal input terminal of the edge computing gateway 6-1; the edge computing gateway 6-1 transmits communication signals wirelessly through the 4G router A6-2.

[0044] The 4G router B6-3 is located at the remote end of the monitoring platform 7. The 4G router B6-3 is used to receive communication signals sent by the 4G router A6-2 in the form of wireless signals and send the communication signals to the monitoring platform 7.

[0045] In this embodiment, the collected water flow velocity signal, pier deformation signal, and water level height signal are transmitted to the edge computing gateway 6-1 via RS485 communication. The principle of this communication method is as follows:

[0046] RS485 interfaces form a half-duplex network, using a two-wire system and shielded twisted-pair cable for transmission. This wiring method is a bus topology, allowing up to 32 nodes to be connected on the same bus. Data signals use differential transmission, also known as balanced transmission, which uses a pair of twisted wires, defining one wire as A and the other as B. Typically, the positive voltage level between A and B of the transmitter driver is +2 to +6V, representing one logic state, while the negative voltage level is -2 to -6V, representing another logic state. There is also a signal ground C, and RS485 includes an "enable" pin. The "enable" pin controls the connection and disconnection of the transmitter driver from the transmission line. When the "enable" pin is active, the transmitter driver is in a high-impedance state, called the "third state," which is distinct from logic 1 and 0.

[0047] Because RS485 uses balanced transmission, terminating resistors are required on the transmission lines. Two-wire and four-wire methods can be used. Two-wire systems enable true multi-point bidirectional communication. With a four-wire connection, only one master device can be connected, with the rest being slave devices. However, regardless of whether a four-wire or two-wire connection is used, up to 32 devices can be connected to the bus.

[0048] RS485 supports up to 32 nodes, thus enabling the construction of networks with multiple nodes. The network topology typically uses a bus structure with terminal matching; ring or star networks are not supported. When building a network, the following points should be noted:

[0049] 1. Use a twisted pair cable as the bus to connect all nodes in series. The length of the lead-out line from the bus to each node should be as short as possible so as to minimize the impact of reflected signals in the lead-out line on the bus signal.

[0050] 2. Attention should be paid to the continuity of the bus characteristic impedance, as signal reflection will occur at points of impedance discontinuity. The following situations are prone to causing this discontinuity: different sections of the bus use different cables, too many transceivers are installed close together on a section of the bus, or excessively long branch lines are led out to the bus. In short, a single, continuous signal path should be provided as the bus.

[0051] There are also some points to note regarding RS485 transmission lines. Bus networks generally require terminating resistors for matching. However, for short distances and low frequencies, terminating matching can be disregarded. Theoretically, when sampling at the midpoint of each received data signal, matching can be ignored as long as the reflected signal attenuates sufficiently at the start of sampling.

[0052] For example, the rise or fall time of the RS485 interface MAX483 with limited slope characteristics is as low as 250ns. The signal transmission rate on a typical twisted pair cable is about 0.2m / ns (24AWG PVC cable). Therefore, as long as the data rate is within 250kb / s and the cable length does not exceed 16 meters, no termination matching is required when using M483 as an RS485 interface.

[0053] In this embodiment, the edge computing gateway 6-1 has powerful edge computing capabilities, provides rich IoT interfaces, expandable IP-based PLC communication, and modular on-demand combination.

[0054] The 4G routers A6-2 and B6-3 easily enable remote access to intranet resources, cross-regional office work, and intranet data encryption; they can also transmit data to the cloud and then to the monitoring platform 7 via the Internet.

[0055] Specific Implementation Method 3: This implementation method further defines the joint monitoring device for railway bridge piers and hydrology described in Specific Implementation Method 2. In this implementation method, the joint monitoring device also includes a camera 4.

[0056] The camera 4 is suspended on one side of the bridge body to acquire environmental images around the bridge body, and the environmental image signal output terminal of the camera 4 is connected to the environmental image signal input terminal of the 4G router A6-2.

[0057] In this embodiment, camera 4 uses a 2-megapixel starlight-level stealth infrared spherical camera, supporting 2 TOPS computing power; it supports behavior analysis, crowd situation analysis, target, human, non-human / mechanical, vehicle, vehicle event detection, and traffic data statistics; it supports backlight adaptation, fog-penetration adaptation, and speed adaptation; it adopts a 1 / 1.8" CMOS; it supports online algorithm loading and upgrades; it has a 120dB super wide dynamic range, which can restore real details even in high-contrast scenes; by adding camera 4 to be installed near the site, when the monitored bridge water level, water flow velocity, and pier settlement and tilt values ​​change, the 4G router A6-2 remotely sends an alarm command to camera 4, the camera generates an alarm recording and saves it, and at the same time, staff can remotely view the site status in real time through the monitoring platform 7.

[0058] Specific Implementation Method Four: This implementation method further defines the joint monitoring device for railway bridge piers and hydrology described in Specific Implementation Method Three. In this implementation method, the joint monitoring device also includes a solar panel 5.

[0059] The solar panel 5 is used to obtain electrical energy to power the camera 4 and the 4G router A6-2.

[0060] In this embodiment, the solar panel 5 is used to ensure power supply for the monitoring instruments. Since most of the monitored bridges are located in the field, far from urban areas, and cannot use mains power, the solar panel 5 is used to power the on-site equipment. To meet the needs of 24 / 7 on-site monitoring, a 200W solar panel and a 100AH ​​12V battery are required.

[0061] Specific Implementation Method 5: This implementation method further defines the joint monitoring device for railway bridge piers and hydrology described in Specific Implementation Method 1. In this implementation method, the deformation meter 2 is fixed on the surface of the bridge pier, and the deformation meter 2 is a MEMS inclinometer. The measurement range of the deformation meter 2 is -90° to +90°, and the measurement accuracy is 0.001°.

[0062] In this embodiment, the deformation meter 2 employs a MEMS inclinometer. Its basic principle is to integrate a microelectromechanical system (MEMS) sensor unit within a fully-fledged application-specific integrated circuit (ASIC). When the deformation meter 2 is in a horizontal position, it measures the corresponding capacitance between the electrodes. If the sensor tilts, the elastic electrode changes its relative position to the fixed electrode, and the capacitance measured by the sensor unit between the two electrodes changes accordingly. This change in capacitance is converted into a corresponding tilt value.

[0063] Specific Implementation Method Six: This implementation method further defines the joint monitoring device for railway bridge piers and hydrology described in Specific Implementation Method One. In this implementation method, the radar 1 is fixed on the equipment support, the equipment support is suspended on one side of the bridge body, and the bottom surface of the radar 1 is kept parallel to the water surface.

[0064] In this embodiment, radar 1, which employs a large-scale antenna array based on 5G wireless MIMO technology and incorporates a super-resolution algorithm, acquires physical information about fluid velocity through a high-frequency millimeter-wave radar beam. It has high measurement accuracy, strong environmental adaptability, and is unaffected by light, rain, snow, or fog. It has all-weather water flow velocity measurement capabilities, meeting the needs of smart water management and smart hydrology for automated, real-time, and high-precision flow measurement. It also provides a precise digital foundation for water conservancy digital twin applications.

[0065] Water flow velocity measurement primarily relies on the propagation characteristics of radar waves on the water surface and in the flow. When radar waves are emitted from the radar antenna onto the water surface or in the flow, they interact with obstacles or water molecules in the flow, resulting in reflection. By measuring certain characteristics of the reflected wave, such as intensity, frequency, and time, the velocity of the water flow can be calculated.

[0066] Pulse Doppler radar combines the range resolution of pulse radar with the velocity resolution of continuous wave radar. It can perform frequency domain single-line filtering and detection, exhibiting strong clutter suppression capabilities and significantly improving the detection of moving targets amidst clutter. It primarily utilizes the Doppler effect to detect moving targets. The Doppler effect refers to the phenomenon where wavelength or frequency changes due to the relative motion between the observer and the wave source; this is also known as the Doppler frequency shift. The Doppler frequency shift can be calculated from the phase change of the radar target echo signal. In the radar receiving segment, the phase is range-dependent. , The distance between radar 1 and the target at different times. The wavelength of electromagnetic waves, The wave number of the electromagnetic wave. The phase difference caused by the round-trip distance propagation is given by the Doppler frequency shift of the target echo relative to radar 1, which is the corresponding derivative.

[0067] The Doppler frequency shift formula for the echo of a moving target from radar 1:

[0068]

[0069] The wave source emits electromagnetic waves onto the target object at a frequency of . The speed is The object's velocity is At this time, the frequency of the electromagnetic wave received by the moving object is... :

[0070]

[0071] Therefore, the relationship between the echo frequency and the wave source frequency is as follows:

[0072]

[0073] When an object approaches the wave source, the above equation... Since the signs are opposite, the relationship between the echo signal frequency and the wave source frequency is expressed as follows:

[0074]

[0075] In this case, if the upper and lower parts are not the same, it is +; or if the upper and lower parts are not the same, it is -.

[0076] The frequency difference between the transmitted signal and the echo signal is called the Doppler frequency. It can be expressed by the following formula:

[0077]

[0078] In radar flow measurement, radar 1 is at a certain angle to the water surface. Therefore, according to the above formula, the surface velocity of the water is:

[0079] .

[0080] Specific Implementation Method Seven: This implementation method further defines the joint monitoring device for railway bridge piers and hydrology described in Specific Implementation Method One. In this implementation method, the water level gauge 3 is suspended directly below the main body of the bridge, and the water level gauge 3 is a non-contact water level measurement sensor; the frequency sweep range is 24GHz - 26GHz.

[0081] In this embodiment, the water level gauge 3 employs a non-contact water level measurement sensor, based on the frequency modulated continuous wave (FMCW) radar ranging principle. Its basic principle is as follows:

[0082] When the target is stationary, there is no Doppler frequency offset between the target and the radar; the echo signal and the transmitted signal only have a time delay. Therefore, the echo signal waveform is a horizontally scaled version of the transmitted signal waveform along the time axis. Assume the stationary target is at a distance of... The speed of electromagnetic waves in air is Therefore, there is a fixed signal delay between the received signal and the transmitted signal. Therefore, in an ideal situation, the echo signal model can be represented as:

[0083]

[0084] The phase of the echo signal is:

[0085]

[0086] The received echo signal and the transmitted signal are mixed by a mixer, and then passed through a low-pass filter to obtain a single-frequency sine wave signal, called the difference frequency signal. The phase of the difference frequency signal is:

[0087]

[0088] The phase derivative with respect to time is the instantaneous angular frequency, divided by... It is the instantaneous frequency, therefore the frequency of the difference frequency signal is:

[0089]

[0090] Therefore, the frequency corresponding to the spectral peak can be obtained from the spectrum diagram. Then, working backwards, we can obtain the target distance. for:

[0091] .

[0092] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A combined monitoring device for railway bridge piers and hydrology, characterized in that, The joint monitoring device comprises a radar (1), a deformation meter (2), a water level gauge (3), a communication device (6) and a monitoring platform (7); The radar (1) is used for acquiring water flow velocity; The deformation meter (2) is used for acquiring the deformation of the pier; The water level gauge (3) is used for acquiring water level height; The water flow velocity signal output end of the radar (1) is connected with the water flow velocity signal input end of the communication device (6); The pier deformation signal output end of the deformation meter (2) is connected with the pier deformation signal input end of the communication device (6); The water level height signal output end of the water level gauge (3) is connected with the water level height signal input end of the communication device (6); The communication device (6) transmits the water flow velocity signal, the pier deformation signal and the water level height signal to the monitoring platform (7) in the form of wireless signal, and the monitoring platform (7) is arranged at a remote end; The monitoring platform (7) is used for comparing the received water flow velocity signal with a preset water flow velocity threshold value, and sending an alarm signal A when the water flow velocity signal is greater than the water flow velocity threshold value; the monitoring platform (7) is used for sending an alarm signal B when the pier deformation signal is received; and the monitoring platform (7) is also used for comparing the received water flow height signal with a preset water flow height threshold value, and sending an alarm signal C when the water flow height signal is greater than the water flow height threshold value. 2.The combined monitoring device for railway bridge pier and hydrology according to claim 1, wherein, The communication device (6) comprises an edge computing gateway (6-1), a 4G router A (6-2) and a 4G router B (6-3); The edge computing gateway (6-1) and the 4G router A (6-2) are both arranged at the bridge body; the water flow velocity signal output end of the radar (1) is connected with the water flow velocity signal input end of the edge computing gateway (6-1); the pier deformation signal output end of the deformation meter (2) is connected with the pier deformation signal input end of the edge computing gateway (6-1); the water level height signal output end of the water level gauge (3) is connected with the water level height signal input end of the edge computing gateway (6-1); and the edge computing gateway (6-1) sends the communication signal in the form of wireless signal through the 4G router A (6-2); The 4G router B (6-3) is arranged at the remote end where the monitoring platform (7) is located, and is used for receiving the communication signal sent by the 4G router A (6-2) in the form of wireless signal and sending the communication signal to the monitoring platform (7). 3.The railway bridge pier and hydrology combined monitoring device according to claim 2, characterized in that, The joint monitoring device further comprises a camera (4); The camera (4) is hung on one side of the bridge body, and is used for acquiring environmental images around the bridge body; and the environmental image signal output end of the camera (4) is connected with the environmental image signal input end of the 4G router A (6-2).

4. The combined monitoring device for railway bridge pier and hydrology according to claim 3, characterized in that, The joint monitoring device further comprises a solar panel (5); The solar panel (5) is used for acquiring electric energy to supply power to the camera (4) and the 4G router A (6-2).

5. The combined monitoring device for railway bridge pier and hydrology according to claim 1, characterized in that, The deformation gauge (2) is fixed on the surface of the pier, and the deformation gauge (2) is a MEMS tiltmeter, the measurement range of the deformation gauge (2) is: -90° to +90°, and the measurement accuracy is 0.001°.

6. The combined monitoring device for railway bridge pier and hydrology according to claim 1, characterized in that, The radar (1) is fixed on the equipment support, the equipment support is suspended on one side of the bridge body, and the bottom surface of the radar (1) is parallel to the water surface.

7. The combined monitoring device for railway bridge pier and hydrology according to claim 1, characterized in that, The water level gauge (3) is suspended directly below the bridge body, and the water level gauge (3) is a non-contact water level measurement sensor; the sweep frequency range is: 24GHz -26GHz.

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