CN111912557A - Cable-stayed bridge cable force real-time monitoring device - Google Patents
Cable-stayed bridge cable force real-time monitoring device Download PDFInfo
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- CN111912557A CN111912557A CN202010896073.9A CN202010896073A CN111912557A CN 111912557 A CN111912557 A CN 111912557A CN 202010896073 A CN202010896073 A CN 202010896073A CN 111912557 A CN111912557 A CN 111912557A
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- cable
- cable force
- monitoring device
- stayed bridge
- time monitoring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
- G01L5/102—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means using sensors located at a non-interrupted part of the flexible member
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
本发明公开了一种斜拉桥索力实时监测装置，包括若干频率传感器、电源模块、计算机模块、信息处理模块和终端，每个频率传感器固定连接于一个拉索上；电源模块与频率传感器电连接，以给频率传感器供电；计算机模块与频率传感器信号连接，计算机模块用于分析拉索的频率信号并计算获得拉索的索力值；信息处理模块与计算机模块信号连接，信息处理模块用于接收、储存并发送通过计算机模块计算的索力值信号；终端与信息处理模块信号连接，终端用于接收信息处理模块的索力值信号并实时显示索力值。本发明的一种斜拉桥索力实时监测装置可以实时监测斜拉桥各个拉索的索力变化情况，以及时调整各个拉索的索力，并提高施工过程中调整索力的效率，保障安全。
The invention discloses a real-time monitoring device for cable force of a cable-stayed bridge. connected to supply power to the frequency sensor; the computer module is connected with the frequency sensor signal, and the computer module is used to analyze the frequency signal of the cable and calculate the cable force value of the cable; the information processing module is connected to the computer module signal, and the information processing module is used for The cable force value signal calculated by the computer module is received, stored and sent; the terminal is connected with the information processing module signal, and the terminal is used to receive the cable force value signal of the information processing module and display the cable force value in real time. The real-time monitoring device for the cable force of the cable-stayed bridge of the present invention can monitor the change of the cable force of each cable of the cable-stayed bridge in real time, adjust the cable force of each cable in time, and improve the efficiency of adjusting the cable force in the construction process. Safety.
Description
Technical Field
The invention relates to the technical field of bridge cable force monitoring equipment, in particular to a cable force real-time monitoring device for a cable-stayed bridge.
Background
The tension force of the stay cable directly influences the internal force and the line shape of the main beam, the cable force in the cable-stayed bridge is an important index for reflecting the internal force state of the full bridge, and the cable force test in the construction stage and the bridge forming stage is one of the main works of the cable-stayed bridge construction monitoring system. The cable force monitoring and adjusting of the cable-stayed bridge usually comprises the steps of obtaining a cable force adjusting process and an adjusting amount through an iterative trial calculation device, and adjusting the cable force of a part of the cable-stayed cables according to a specified sequence during actual construction. However, the substitute trial calculation device often cannot obtain an optimal result, tension errors in the cable adjusting process can affect each other due to cable force control, if a certain stayed cable has a large tension error, subsequent cable force adjustment work may have a certain error, cable adjustment needs to be repeated, and construction workload is increased and construction period is prolonged.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a cable force real-time monitoring device for a cable-stayed bridge, which can monitor the cable force change condition of each cable of the cable-stayed bridge in real time, adjust the cable force of each cable in real time, improve the efficiency of adjusting the cable force in the construction process and ensure the safety.
The cable-stayed bridge cable force real-time monitoring device according to the embodiment of the invention comprises: each frequency sensor is fixedly connected to one inhaul cable and corresponds to the inhaul cable one by one; the power supply module is arranged on the inhaul cable, electrically connected with the frequency sensor and used for supplying power to the frequency sensor; the computer module is in signal connection with the frequency sensor and is used for analyzing the frequency signal of the inhaul cable and calculating to obtain a cable force value of the inhaul cable; the information processing module is in signal connection with the computer module and is used for receiving, storing and sending the cable force value signal calculated by the computer module; and the terminal is in signal connection with the information processing module and is used for receiving the cable force value signal of the information processing module and displaying the cable force value in real time.
The technical scheme at least has the following beneficial effects: when the stay cable is excited, the frequency sensor processes a random vibration signal of the stay cable to obtain the real-time natural frequency of the stay cable, the computer module receives a real-time natural frequency signal of the frequency sensor and analyzes and calculates the signal to obtain a cable force value of the stay cable, the information processing module receives a cable force value signal calculated by the computer module, the cable force value signal is stored and then sent to the terminal to display the cable force of the stay cable in real time, and a constructor can adjust the cable force of each stay cable in time according to the cable force distribution condition of each stay cable displayed by the terminal in real time according to actual conditions.
According to some embodiments of the invention, the frequency sensor is disposed at a lower end of the cable.
According to some embodiments of the invention, the frequency sensor is a piezoelectric acceleration sensor.
According to some embodiments of the invention, the computer module is provided with an amplifier unit for amplifying the response signal of the piezoelectric acceleration sensor.
According to some embodiments of the invention, the amplifier unit is a voltage amplifier or a charge amplifier.
According to some embodiments of the invention, the information processing module comprises a single chip microcomputer, a wireless radio frequency chip unit and a power supply unit, the power supply unit is used for supplying power to the single chip microcomputer and the wireless radio frequency chip unit, the single chip microcomputer is used for processing and storing the cable tension value signal calculated by the computer module, and the wireless radio frequency chip unit is used for sending the signal processed by the single chip microcomputer to the terminal.
According to some embodiments of the invention, the terminal is a liquid crystal display.
According to some embodiments of the present invention, the terminal is a mobile phone terminal.
According to some embodiments of the invention, the frequency sensor is externally provided with a protective shell.
According to some embodiments of the invention, the protective shell is provided with heat dissipation holes.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a cable force real-time monitoring device of a cable-stayed bridge according to an embodiment of the invention;
FIG. 2 is a schematic illustration of the installation of a frequency sensor in an embodiment of the invention;
fig. 3 is an enlarged view of the installation of the frequency sensor in the embodiment of the present invention.
Reference numerals:
the frequency sensor 100, the inhaul cable 110, the protective shell 120 and the heat dissipation hole 121;
a power supply module 200;
a computer module 300, an amplifier unit 310;
the system comprises an information processing module 400, a singlechip 410, a wireless radio frequency chip unit 420 and a power supply unit 430;
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 3, an embodiment of the present invention provides a cable force real-time monitoring device for a cable-stayed bridge, including a plurality of frequency sensors 100 for determining vibration frequencies of cables 110, each frequency sensor 100 is correspondingly adhered to a lower end of one cable 110, which is convenient for installation, in this embodiment, a piezoelectric acceleration sensor is selected as the frequency sensor 100, the piezoelectric acceleration sensor has higher resolution and precision in low and medium frequency ranges, and is suitable for determining the vibration frequencies of the cables 110 with lower fundamental frequency and less vibration, a power module 200 is further adhered to the cable 110, and the power module 200 is electrically connected to the frequency sensors 100 to supply power to the frequency sensors 100, so as to ensure normal use; the computer module 300 is in signal connection with the frequency sensor 100, the information processing module 400 is in signal connection with the computer module 300, and the terminal 500 is in signal connection with the information processing module 400. concretely, the computer module 300 is provided with an amplifier unit 310, the amplifier unit 310 is used for amplifying the received frequency signal and matching with the piezoelectric acceleration sensor, in the embodiment, a voltage amplifier or a charge amplifier is selected as the amplifier unit 310, so that the response of the piezoelectric acceleration sensor can be as low as 0.3Hz in the low frequency band and meet the measurement requirement, the computer module 300 can receive the frequency signal measured by the frequency sensor 100, the frequency signal is amplified and subjected to self-spectrum analysis to obtain a spectrogram and self-vibration frequencies of the cable 110, after the self-vibration frequencies of each order are obtained, the minimum difference value between adjacent peak points is taken as the fundamental frequency of the vibration of the cable 110, obtaining a main vibration order according to the main vibration frequency (highest peak value), so that a cable force value corresponding to the cable 110 can be obtained through calculation according to the main vibration frequency and the main vibration order; the information processing module 400 comprises a single chip microcomputer 410, a wireless radio frequency chip unit 420 and a power supply, the power supply unit 430 can supply power to the single chip microcomputer 410 and the wireless radio frequency chip unit 420, the single chip microcomputer 410 can receive a cable force value signal from the computer module 300, after the cable force value signal is stored, the signal can be sent to the terminal 500 through the wireless radio frequency chip unit 420, and the terminal 500 receives the signal and displays the cable force condition of each cable 110 in real time.
When the cable 110 is excited, the piezoelectric acceleration sensor processes a random vibration signal of the cable 110 to obtain a real-time natural frequency of the cable 110, the computer module 300 receives a real-time natural frequency signal of the piezoelectric acceleration sensor, amplifies the signal, analyzes and calculates the signal to obtain a cable force value corresponding to the cable 110, the information processing module 400 receives a cable force value signal calculated by the computer module 300, the cable force value signal is processed and stored by the single chip microcomputer 410, and then the signal is sent to the terminal 500 through the wireless radio frequency chip unit 420 to display the cable force of the cable 110 in real time, so that a constructor can adjust the cable force of each cable 110 in time according to the cable force distribution condition of each cable 110 displayed in real time by the terminal 500, thereby avoiding the defect that when the cable force adjustment of one cable 110 has a large error in the conventional method, the error exists in the subsequent cable force adjustment, the work load is effectively reduced, the cable force adjusting efficiency is improved, and the safety is guaranteed.
Further, the terminal 500 is configured as a liquid crystal display screen to clearly display the cable force distribution of each cable 110, so as to facilitate cable force adjustment according to data.
In other embodiments, it can be understood that the terminal 500 may be configured as a mobile terminal, and the mobile terminal is not limited by a geographic location, so as to facilitate observation of the cable force distribution of each cable 110 at any time and any place.
Referring to fig. 3, further, the exterior of the frequency sensor 100 is provided with a protective case 120, protecting the sensor from damage.
Referring to fig. 3, further, a plurality of heat dissipation holes 121 are formed in the side wall of the protective shell 120, which is beneficial to normal heat dissipation of the frequency sensor 100, and prevents the frequency sensor 100 from being affected by an excessive temperature and even from being damaged by the frequency sensor 100.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The utility model provides a cable-stay bridge cable force real-time supervision device which characterized in that includes:
the device comprises a plurality of frequency sensors (100), wherein each frequency sensor (100) is fixedly connected to a pull cable (110), and the frequency sensors (100) correspond to the pull cables (110) one by one;
the power supply module (200) is arranged on the inhaul cable (110), the power supply module (200) is electrically connected with the frequency sensor (100), and the power supply module (200) is used for supplying power to the frequency sensor (100);
the computer module (300) is in signal connection with the frequency sensor (100), and the computer module (300) is used for analyzing the frequency signal of the cable (110) and calculating to obtain a cable force value of the cable (110);
the information processing module (400) is in signal connection with the computer module (300), and the information processing module (400) is used for receiving, storing and sending the cable force value signal calculated by the computer module (300);
the terminal (500) is in signal connection with the information processing module (400), and the terminal (500) is used for receiving the cable force value signal of the information processing module (400) and displaying the cable force value in real time.
2. The cable-stayed bridge cable force real-time monitoring device according to claim 1, characterized in that: the frequency sensor (100) is arranged at the lower end of the inhaul cable (110).
3. The cable-stayed bridge cable force real-time monitoring device according to claim 1, characterized in that: the frequency sensor (100) is a piezoelectric acceleration sensor.
4. The cable-stayed bridge cable force real-time monitoring device according to claim 3, characterized in that: the computer module (300) is provided with an amplifier unit (310), and the amplifier unit (310) is used for amplifying a response signal of the piezoelectric acceleration sensor.
5. The cable-stayed bridge cable force real-time monitoring device according to claim 4, characterized in that: the amplifier unit (310) is a voltage amplifier or a charge amplifier.
6. The cable-stayed bridge cable force real-time monitoring device according to claim 1, characterized in that: the information processing module (400) comprises a single chip microcomputer (410), a wireless radio frequency chip unit (420) and a power supply unit (430), wherein the power supply unit (430) is used for supplying power to the single chip microcomputer (410) and the wireless radio frequency chip unit (420), the single chip microcomputer (410) is used for processing and storing the cable force value signal calculated by the computer module (300), and the wireless radio frequency chip unit (420) is used for sending the signal processed by the single chip microcomputer (410) to the terminal (500).
7. The cable-stayed bridge cable force real-time monitoring device according to claim 1, characterized in that: the terminal (500) is a liquid crystal display screen.
8. The cable-stayed bridge cable force real-time monitoring device according to claim 1, characterized in that: the terminal (500) is a mobile phone terminal.
9. The cable-stayed bridge cable force real-time monitoring device according to claim 1, characterized in that: a protective shell (120) is arranged outside the frequency sensor (100).
10. The cable-stayed bridge cable force real-time monitoring device according to claim 9, characterized in that: the protective shell (120) is provided with heat dissipation holes (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010896073.9A CN111912557A (en) | 2020-08-31 | 2020-08-31 | Cable-stayed bridge cable force real-time monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010896073.9A CN111912557A (en) | 2020-08-31 | 2020-08-31 | Cable-stayed bridge cable force real-time monitoring device |
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| CN111912557A true CN111912557A (en) | 2020-11-10 |
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| CN202010896073.9A Pending CN111912557A (en) | 2020-08-31 | 2020-08-31 | Cable-stayed bridge cable force real-time monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136514A (en) * | 2021-12-01 | 2022-03-04 | 湖南大学 | High-performance ultrathin cable force sensor and cable force monitoring system |
| CN118756576A (en) * | 2024-06-19 | 2024-10-11 | 山东省工业技术研究院 | A cable force adaptive control system and method |
| CN118756576B (en) * | 2024-06-19 | 2025-04-15 | 山东省工业技术研究院 | A cable force adaptive control system and method |
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Cited By (3)
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|---|---|---|---|---|
| CN114136514A (en) * | 2021-12-01 | 2022-03-04 | 湖南大学 | High-performance ultrathin cable force sensor and cable force monitoring system |
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