Beam bridge collapse real-time alarm and early warning system and control method thereof

Abstract

The invention provides a beam bridge collapse real-time alarm and early warning system and a control method thereof. Comprising a monitoring module which comprises an infrared correlation sensor, a displacement sensor, a tilt angle sensor and a control unit; the transmitting end and the receiving end of the infrared correlation sensor are respectively arranged on the main beam sections on the two sides of the expansion joint; the displacement sensors are used for monitoring the displacement degree of the main beam sections on the two sides of the expansion joint; the tilt angle sensor is arranged on the main beam section and used for monitoring the tilt degree of the main beam section; the control unit is used for receiving the state information, monitored by the infrared correlation sensor, the displacement sensor and the tilt angle sensor, of the main beam section, and generating a control instruction when the state information of the main beam section does not meet the requirement; the warning module is used for generating a warning signal for warning people passing through the girder section when receiving the control instruction of the control unit; and the remote alarm module is used for generating alarm information when receiving the control instruction of the control unit and sending the alarm information to bridge maintenance personnel.

Description

Technical Field

[0001] The invention belongs to the technical field of traffic alarm systems, and in particular relates to a real-time alarm and early warning system for the collapse of a beam bridge and a control method thereof. Background Art

[0002] Bridges are generally composed of multiple piers and multiple main beam sections. The piers are used to support the beam sections, and expansion joints are set between each or every few beam sections. As many early-built bridges increase in service life, they are affected by factors such as load, material aging, and environmental corrosion, and structural damage gradually accumulates, which may lead to collapse in extreme cases. For example, if a bridge pier tilts due to hollowing out of the foundation or a main beam section suffers structural damage, the main beam section will collapse.

[0003] The collapse of the main beam section of a bridge often leads to serious secondary accidents, resulting in heavy casualties. According to actual engineering accident investigations, most vehicles did not fall off the bridge at the moment of the bridge collapse, but because the management department failed to detect the accident in time and take corresponding control measures. Especially in low visibility conditions such as at night, rain, snow, and fog, there is a lack of timely and effective alarm systems to warn drivers, making it difficult for subsequent high-speed vehicles to detect the collapse of the bridge ahead in time, so they have no time to brake, resulting in tragedy.

[0004] How to provide a real-time early warning system for bridges has become a top priority. Summary of the invention

[0005] The invention provides a beam bridge collapse real-time alarm and early warning system and a control method thereof, which can ensure the safety of the bridge during operation.

[0006] On the one hand, a real-time alarm and early warning system for beam bridge collapse is provided, comprising: The monitoring module comprises an infrared counter-radiation sensor, a displacement sensor, an inclination sensor and a control unit; the transmitting end and the receiving end of the infrared counter-radiation sensor are respectively arranged on both sides of the expansion joint; the displacement sensor is used to monitor the width of the expansion joint; the inclination sensor is arranged on the main beam section, and is used to monitor the inclination degree of the main beam section; the control unit is used to receive the status information of the main beam section monitored by the infrared counter-radiation sensor, the displacement sensor and the inclination sensor, and generate a control instruction when the status information of the main beam section does not meet the requirements; A warning module, upon receiving a control instruction from the control unit, generates a warning signal for alerting personnel passing through the main beam section; The remote alarm module generates an alarm message upon receiving a control instruction from the control unit and sends the alarm message to the bridge maintenance personnel.

[0007] Optionally, the control unit includes a PLC controller.

[0008] Optionally, the warning module includes a warning screen and an audible and visual alarm.

[0009] Optionally, the remote alarm module includes a GSM text message alarm module.

[0010] Optionally, the beam bridge collapse real-time alarm and warning system also includes a power supply module, and the power supply module includes a plurality of parallel power supply units, and the plurality of parallel power supply units are sequentially arranged on a plurality of main beam sections.

[0011] On the other hand, a control method of a beam bridge collapse real-time alarm and early warning system is provided, comprising: Obtain status information of the main beam section monitored by infrared radiation sensors, displacement sensors, and inclination sensors; When the status information of the main beam section does not meet the requirements, the control unit generates a control instruction; The control unit transmits the control instruction to the warning module and the remote alarm module. When the warning module receives the control instruction, it generates a warning signal to warn people passing through the main beam section; when the remote alarm module receives the control instruction, it generates an alarm message and sends the alarm message to the bridge maintenance personnel.

[0012] Optionally, when the status information of the main beam section does not meet the requirements, generating a control instruction includes: When the receiving end of the infrared radiation sensor cannot detect the infrared signal from the transmitting end, a first control instruction is generated, and the first control instruction is sent to the warning module and the remote alarm module; Alternatively, when the displacement sensor monitors that the width of the expansion joint exceeds a first width threshold or is less than a second width threshold, a first control instruction is generated and the first control instruction is sent to the warning module and the remote alarm module, and the second width threshold is less than the first width threshold; Alternatively, when the inclination sensor detects that the inclination of the main beam section exceeds the inclination threshold, a first control instruction is generated and sent to the warning module and the remote alarm module.

[0013] Optionally, the control unit transmits the control instruction to the warning module and the remote alarm module, including: The control unit determines the position of the warning module on the bridge for releasing the warning signal according to the maximum speed limit of the bridge and the length of the main beam section, and transmits the control instruction to the warning module for releasing the warning signal; The control unit transmits the control command to the remote alarm module.

[0014] Optionally, the first width threshold , the second width threshold ;in, It is the initial value of the displacement degree monitored when the displacement sensor is installed; The elongation of the main beam section caused by the temperature increase is expressed by the formula Sure; The shortening of the main beam section caused by the temperature drop is expressed by the formula ; Indicates the maximum design ambient temperature. Indicates the minimum design ambient temperature. Indicates the temperature when the displacement sensor is installed. Indicates the thermal expansion coefficient of the main beam section material. Indicates the length of the main beam section. Indicates the slight vibration and test noise caused by vehicle load. It is obtained through statistical analysis of measured data on the bridge per unit time.

[0015] Optionally, the inclination angle threshold includes an inclination angle threshold in the longitudinal direction of the bridge and an inclination angle threshold in the transverse direction of the bridge, and when the inclination degree of the main beam section in the longitudinal direction of the bridge exceeds the inclination angle threshold in the longitudinal direction of the bridge or when the inclination degree in the transverse direction of the bridge exceeds the inclination angle threshold in the transverse direction of the bridge, a first control instruction is generated; The inclination angle threshold along the bridge direction is , the inclination threshold of the transverse bridge direction is ; It represents the initial inclination angle of the main beam section along the bridge direction. Indicates the initial inclination angle of the main beam section in the transverse direction of the bridge. Indicates the increase in the inclination angle of the main beam section along the bridge direction. Indicates the increase in the inclination angle of the main beam section in the transverse direction of the bridge. and stated It is obtained by calculating the most unfavorable load distribution of the bridge according to the bridge design specifications.

[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects: In the disclosed embodiment, a real-time alarm and early warning system for the collapse of a beam bridge is provided. The system includes a monitoring module, which includes an infrared counter-radiation sensor, a displacement sensor, and an inclination sensor. The state of the bridge is monitored by the infrared counter-radiation sensor, the displacement sensor, and the inclination sensor. When the state of the bridge is abnormal, the control unit generates a control instruction and sends the control instruction to the warning module and the remote alarm module. The warning module warns the personnel passing through the main beam section, thereby avoiding safety hazards for the drivers passing through the main beam section. At the same time, the remote alarm module can notify the bridge maintenance personnel to maintain the bridge in time to ensure the safety of the bridge, or take control measures to prevent secondary accidents such as vehicles and personnel falling off the bridge when the bridge collapses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a beam bridge collapse real-time alarm and early warning system provided by an embodiment of the present disclosure; Figure 2 A schematic diagram of a monitoring module provided in an embodiment of the present disclosure; Figure 3 A schematic diagram of circuit connection of a monitoring module provided in an embodiment of the present disclosure; Figure 4 A method flow chart of a control method of a beam bridge collapse real-time alarm and warning system provided in an embodiment of the present disclosure.

[0019] The reference numerals are as follows: 1: monitoring module; 100: bridge pier; 101: main beam section; 102: expansion joint; 103: isolation belt; 11: infrared beam sensor; 111: infrared transmitter; 112: infrared receiver; 12: displacement sensor; 121: stretching fixed end; 13: tilt sensor; 14: sensor protection cover; 2: warning module; 21: warning screen; 22: sound and light alarm; 23: warning light pole; 3: Remote alarm module; 4: power module; 41: power supply unit; 42: solar power generation unit; 43: wind power generation unit; 44: cable. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Figure 1 A schematic diagram of a real-time alarm and warning system for beam bridge collapse provided in an embodiment of the present disclosure.

[0022] Figure 2 A schematic diagram of a monitoring module provided in an embodiment of the present disclosure. Figure 2 yes Figure 1 A partial enlarged view of .

[0023] See also Figure 1 and Figure 2 , the system includes: The monitoring module 1 comprises an infrared counter-radiation sensor 11, a displacement sensor 12, an inclination sensor 13 and a control unit; the transmitting end 111 and the receiving end 112 of the infrared counter-radiation sensor 11 are respectively arranged on the main beam sections 101 on both sides of the expansion joint 102; the displacement sensor 23 is used to monitor the displacement degree of the main beam sections 101 on both sides of the expansion joint 102; the inclination sensor 13 is arranged on the main beam section 101, and is used to monitor the inclination degree of the main beam section 101; the control unit is used to receive the status information of the main beam section 101 monitored by the infrared counter-radiation sensor 11, the displacement sensor 12 and the inclination sensor 13, and generate a control instruction when the status information of the main beam section 101 does not meet the requirements; The warning module 2 generates a warning signal for warning people passing through the main beam section 101 when receiving a control instruction from the control unit; The remote alarm module 3 generates alarm information upon receiving the control instruction from the control unit, and sends the alarm information to the bridge maintenance personnel.

[0024] In the disclosed embodiment, a real-time alarm and early warning system for the collapse of a beam bridge is provided. The system includes a monitoring module, which includes an infrared beam sensor, a displacement sensor, and an inclination sensor. The infrared beam sensor, the displacement sensor, and the inclination sensor are used to monitor the state of the bridge. When the state of the bridge is poor, the control unit generates a control instruction and sends the control instruction to the warning module and the remote alarm module. The warning module warns the personnel passing through the main beam section, thereby avoiding safety hazards for the drivers passing through the main beam section. At the same time, the remote alarm module can notify the bridge maintenance personnel to maintain the bridge in time to ensure the safety of the bridge.

[0025] In the disclosed embodiment, Figure 1 What is shown in the figure is a structural diagram of a beam bridge, which includes piers and main beam sections, and expansion joints are arranged between the main beam sections.

[0026] In the disclosed embodiment, the main beam sections 101 are arranged on the pier 100 , expansion joints 102 are provided between the main beam sections 101 , and isolation strips 103 are provided on the surface of the main beam sections 101 .

[0027] In the embodiment of the present disclosure, the infrared radiation sensor 11 includes an infrared transmitter 111 and an infrared receiver 112 .

[0028] In the disclosed embodiment, the displacement sensor 12 comprises a pull-rope displacement sensor, the pull rope of which is fixed at a tensile fixing point 121 on the main beam section A, and the pull-rope displacement sensor is fixed on the main beam section B.

[0029] It is worth noting that the main beam section A and the main beam section B can be any two adjacent main beam sections.

[0030] In the embodiment of the present disclosure, the control unit includes a PLC controller. The PLC controller can fuse multiple monitoring signals to generate control instructions.

[0031] In the disclosed embodiment, the monitoring module 1 further includes a sensor protection cover 14 ( Figure 1 As shown in FIG. 1 ), setting a sensor protection cover 14 can protect the sensor and prevent the sensor from being damaged.

[0032] In the disclosed embodiment, the warning module 2 includes a warning screen 21 and an audible and visual alarm 22. The warning screen and the audible and visual alarm can ensure a warning effect for people passing through the main beam section.

[0033] It is worth noting that in the embodiment of the present disclosure, the warning screen and the sound and light alarm are an integrated structure. Figure 1 The labels refer to the same structure.

[0034] In the embodiment of the present disclosure, the warning module 2 further includes a warning light pole 23 .

[0035] In the embodiment of the present disclosure, the remote alarm module 3 includes a GSM short message alarm module. The remote alarm function can be realized through the GSM short message alarm module.

[0036] In the disclosed embodiment, there may be one remote alarm module 3, or one remote alarm module may be provided for each beam section. When the number of remote alarm modules is one, the remote alarm module is provided at the vehicle entrance on the bridge according to the vehicle travel direction.

[0037] In the disclosed embodiment, the beam bridge collapse real-time alarm and early warning system further includes: The power module 4 includes a plurality of parallel power supply units 41, which are sequentially arranged on a plurality of main beam sections 101. By arranging a plurality of parallel power supply units, when a main beam section collapses, the power supply of other main beam sections will not be affected, so that the monitoring modules, warning modules and remote alarm modules on other main beam sections can continue to operate.

[0038] In the embodiment of the present disclosure, the control unit and the power supply unit 41 are an integrated structure, together forming a system control box, and the power supply unit is a battery.

[0039] In the disclosed embodiment, the power module further includes a solar power generation unit 42, a wind power generation unit 43 and a cable 44. The solar power generation unit 42 and the wind power generation unit 43 are used to generate electricity, and the cable 44 is used to transmit electricity to the power consumption unit.

[0040] In the disclosed embodiment, the solar power generation unit 42 is a photovoltaic panel, and the wind power generation unit is a wind turbine.

[0041] Figure 3 A schematic diagram of the circuit connection of a monitoring module provided by an embodiment of the present disclosure. Figure 3 The battery supplies power to the monitoring module through the power line. The infrared transmitter, infrared receiver, tilt sensor, displacement sensor in the monitoring module are electrically connected to the PLC controller through the signal line, and the PLC controller is electrically connected to the GSM module, warning screen and sound and light alarm through the signal line to transmit control instructions.

[0042] Figure 4 A method flow chart of a control method of a beam collapse real-time alarm and early warning system provided by an embodiment of the present disclosure. Figure 4 ,include: S201, obtaining status information of the main beam section monitored by the infrared radiation sensor, the displacement sensor, and the inclination sensor.

[0043] S202: When the status information of the main beam section does not meet the requirements, the control unit generates a control instruction.

[0044] In one example, step S202 includes: When the receiving end of the infrared radiation sensor cannot detect the infrared signal from the transmitting end, a first control instruction is generated, and the first control instruction is sent to the warning module and the remote alarm module; Alternatively, when the displacement sensor monitors that the width of the expansion joint exceeds a first width threshold or is less than a second width threshold, a first control instruction is generated and the first control instruction is sent to the warning module and the remote alarm module, and the second width threshold is less than the first width threshold; Alternatively, when the inclination sensor detects that the inclination of the main beam section exceeds the inclination threshold, a first control instruction is generated and sent to the warning module and the remote alarm module.

[0045] In the disclosed embodiment, when the infrared counter-radiation sensor cannot detect the infrared signal from the transmitting end, when the displacement sensor detects that the width of the expansion joint between the main beam sections exceeds the first width threshold, when the width of the expansion joint between the main beam sections is less than the second width threshold, and when the inclination sensor detects that the inclination of the main beam sections exceeds the inclination threshold, it is determined that the bridge has collapsed or the risk of bridge collapse is particularly high, and a first control instruction is generated to control the warning module to warn passers-by, and to control the remote alarm module to notify bridge maintenance personnel to maintain the bridge in time.

[0046] In the disclosed embodiment, when the displacement degree between the main beam sections exceeds the first width threshold or is less than the second width threshold, it indicates that the distance between the main beam sections is too far or too close. The distance between the main beam sections being too far or too close both indicates that the state of the main beam sections does not meet the requirements.

[0047] In the embodiment of the present disclosure, the first width threshold , the second width threshold ;in, It is the initial value of the displacement degree monitored when the displacement sensor is installed; The elongation of the main beam section caused by the temperature increase is expressed by the formula Sure; The shortening of the main beam section caused by the temperature drop is expressed by the formula ; Indicates the maximum design ambient temperature. Indicates the minimum design ambient temperature. Indicates the temperature when the displacement sensor is installed. Indicates the thermal expansion coefficient of the main beam section material. Indicates the length of the main beam section. Indicates the slight vibration and test noise caused by vehicle load. It is obtained through statistical analysis of measured data on the bridge per unit time.

[0048] In the disclosed embodiment, if the first width threshold is set to be relatively small, the control unit may determine that the operating state of the bridge is poor when the bridge is in a healthy state, which is not conducive to the normal operation of the bridge. If the first width threshold is set to be relatively large, the health state of the bridge may be poor. When the possibility of collapse is high, the control unit still does not issue a control command to warn passers-by, which is not conducive to the safety of the bridge during operation. By determining the value range of the first width threshold through the above formula, it can be ensured that the value range of the first width threshold is set to be relatively reasonable, thereby ensuring the safety of the bridge during operation and ensuring that the bridge can operate normally when it is in a healthy state.

[0049] In the embodiment of the present disclosure, the inclination angle threshold includes an inclination angle threshold in the longitudinal direction of the bridge and an inclination angle threshold in the transverse direction of the bridge. When the inclination degree of the main beam section in the longitudinal direction of the bridge exceeds the inclination angle threshold in the longitudinal direction of the bridge or when the inclination degree in the transverse direction of the bridge exceeds the inclination angle threshold in the transverse direction of the bridge, a first control instruction is generated; The inclination angle threshold along the bridge direction is , the inclination threshold of the transverse bridge direction is ; It represents the initial inclination angle of the main beam section along the bridge direction. Indicates the initial inclination angle of the main beam section in the transverse direction of the bridge. Indicates the increase in the inclination angle of the main beam section along the bridge direction. Indicates the increase in the inclination angle of the main beam section in the transverse direction of the bridge. and stated It is obtained by calculating the most unfavorable load distribution of the bridge according to the bridge design specifications.

[0050] In the disclosed embodiment, if the inclination angle threshold is set too small, when the bridge tilts slightly, the inclination sensor will determine that the bridge is in a poor state, which will cause the control unit to determine that the bridge is in a poor operating state when the bridge is in a healthy state, which is not conducive to the normal operation of the bridge. If the inclination angle threshold is set too large, the bridge will tilt to a greater extent. When the bridge is likely to collapse, the control unit still does not issue a control instruction to control the warning module to warn passers-by, which is not conducive to the safety of the bridge during operation. By determining the inclination angle threshold in the above manner, it can be ensured that the inclination angle threshold is relatively reasonable, thereby ensuring the safety of the bridge during operation and ensuring that the bridge can operate normally when it is in a healthy state.

[0051] In the disclosed embodiment, the longitudinal direction of the bridge refers to the direction of travel of vehicles on the bridge, and the transverse direction of the bridge refers to the direction perpendicular to the direction of travel of the vehicles.

[0052] S203, the control unit transmits the control instruction to the warning module and the remote alarm module. When the warning module receives the control instruction, it generates a warning signal to warn people passing through the main beam section; when the remote alarm module receives the control instruction, it generates an alarm message and sends the alarm message to the bridge maintenance personnel.

[0053] In one example, step S203 includes: In the first step, the control unit determines the position of the warning module for releasing the warning signal on the bridge according to the maximum speed limit of the bridge and the length of the main beam section, and transmits the control instruction to the warning module for releasing the warning signal.

[0054] In the second step, the control unit transmits the control command to the remote alarm module.

[0055] In step S203, when a main beam section collapses, the control command controls the warning module on one or more main beam sections adjacent to the main beam section in the vehicle direction to send out a warning signal, and controls the remote alarm module to send out an alarm message. Specifically, the control command can be sent by the control unit on each main beam section to control the warning module and the remote alarm module.

[0056] In the embodiment of the present disclosure, the alarm information issued by the remote alarm module may include the position information of the collapsed main beam section (for example, the position information of the main beam section is determined by the main beam section number).

[0057] In the disclosed embodiment, when a main beam section collapses, it is possible to determine which specific warning module or modules will give off an audible or visual alarm based on the direction of travel of vehicles on the bridge, the length of each main beam section, and the maximum design speed of the bridge.

[0058] For example, the main beam section 7, the main beam section 6, the main beam section 5, the main beam section 4, the main beam section 3, the main beam section 2, and the main beam section 1 ( ) collapses, the vehicle travels from main beam section 7 to main beam section 1, and the lengths of the main beam sections are The maximum speed of the bridge is According to the national standard GB-12676, the braking distance required for the vehicle to brake to zero speed is ,according to Sure When the conditions are met, the braking distance of the two main beam sections 3 and 4 is required, and the warning modules that issue the sound and light alarm are the warning modules on the main beam sections 3 and 4, thereby ensuring that sufficient braking distance can be provided for the drivers on the bridge to ensure safety. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A beam bridge collapse real-time alarm and early warning system, characterized in that: include: Monitoring module, including infrared radiation sensor, displacement sensor, tilt sensor and control unit; The transmitting end and the receiving end of the infrared counter-radiation sensor are respectively arranged on both sides of the expansion joint; the displacement sensor is used to monitor the width of the expansion joint; the inclination sensor is arranged on the main beam section to monitor the inclination degree of the main beam section; the control unit is used to receive the status information of the main beam section monitored by the infrared counter-radiation sensor, the displacement sensor and the inclination sensor, and generate a control instruction when the status information of the main beam section does not meet the requirements; A warning module, upon receiving a control instruction from the control unit, generates a warning signal for alerting personnel passing through the main beam section; The remote alarm module generates an alarm message upon receiving a control instruction from the control unit and sends the alarm message to the bridge maintenance personnel.

2. The beam bridge collapse real-time alarm and early warning system according to claim 1 is characterized in that: The control unit includes a PLC controller.

3. The beam bridge collapse real-time alarm and early warning system according to claim 1 is characterized in that: The warning module includes a warning screen and an audible and visual alarm.

4. The beam bridge collapse real-time alarm and early warning system according to claim 1 is characterized in that: The remote alarm module includes a GSM text message alarm module.

5. The beam bridge collapse real-time alarm and early warning system according to claim 1 is characterized in that: The beam bridge collapse real-time alarm and warning system also includes a power supply module, which includes a plurality of parallel power supply units, and the plurality of parallel power supply units are sequentially arranged on a plurality of main beam sections.

6. A control method for a beam bridge collapse real-time alarm and early warning system, characterized in that: include: Obtain status information of the main beam section monitored by infrared radiation sensors, displacement sensors, and inclination sensors; When the status information of the main beam section does not meet the requirements, the control unit generates a control instruction; The control unit transmits the control instruction to the warning module and the remote alarm module. When the warning module receives the control instruction, it generates a warning signal to warn people passing through the main beam section; when the remote alarm module receives the control instruction, it generates alarm information and sends the alarm information to the bridge maintenance personnel.

7. The control method of the beam bridge collapse real-time alarm and early warning system according to claim 6 is characterized in that: When the status information of the main beam section does not meet the requirements, a control instruction is generated, including: When the receiving end of the infrared radiation sensor cannot detect the infrared signal from the transmitting end, a first control instruction is generated, and the first control instruction is sent to the warning module and the remote alarm module; Alternatively, when the displacement sensor monitors that the width of the expansion joint exceeds a first width threshold or is less than a second width threshold, a first control instruction is generated and the first control instruction is sent to the warning module and the remote alarm module, and the second width threshold is less than the first width threshold; Alternatively, when the inclination sensor detects that the inclination of the main beam section exceeds the inclination threshold, a first control instruction is generated and sent to the warning module and the remote alarm module.

8. The control method of the beam bridge collapse real-time alarm and early warning system according to claim 6 is characterized in that: The control unit transmits control instructions to the warning module and remote alarm module, including: The control unit determines the position of the warning module on the bridge for releasing the warning signal according to the maximum speed limit of the bridge and the length of the main beam section, and transmits the control instruction to the warning module for releasing the warning signal; The control unit transmits the control command to the remote alarm module.

9. The control method of the beam bridge collapse real-time alarm and early warning system according to claim 7 is characterized in that: The first width threshold , the second width threshold ;in, It is the initial value of the displacement degree monitored when the displacement sensor is installed; The elongation of the main beam section caused by the temperature increase is expressed by the formula Sure; The shortening of the main beam section caused by the temperature drop is expressed by the formula ; Indicates the maximum design ambient temperature. Indicates the minimum design ambient temperature. Indicates the temperature when the displacement sensor is installed. It represents the thermal expansion coefficient of the main beam section material. Indicates the length of the main beam section. Indicates the slight vibration and test noise caused by vehicle load. It is obtained through statistical analysis of measured data on the bridge per unit time.

10. The control method of the beam bridge collapse real-time alarm and early warning system according to claim 7, characterized in that: The inclination angle threshold includes an inclination angle threshold in the longitudinal direction of the bridge and an inclination angle threshold in the transverse direction of the bridge. When the inclination degree of the main beam section in the longitudinal direction of the bridge exceeds the inclination angle threshold in the longitudinal direction of the bridge or when the inclination degree in the transverse direction of the bridge exceeds the inclination angle threshold in the transverse direction of the bridge, a first control instruction is generated; The inclination angle threshold along the bridge direction is , the inclination threshold of the transverse bridge direction is ; It represents the initial inclination angle of the main beam section along the bridge direction. Indicates the initial inclination angle of the main beam section in the transverse direction of the bridge. Indicates the increase in the inclination angle of the main beam section along the bridge direction. Indicates the increase in the inclination angle of the main beam section in the transverse direction of the bridge. and stated It is obtained by calculating the most unfavorable load distribution of the bridge according to the bridge design specifications.

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