Bridge support displacement monitoring system and method
阅读说明：本技术 桥梁支座位移监测系统及方法 (Bridge support displacement monitoring system and method ) 是由 周鑫 朱明� 范景祥 田刚 *** 赵伟斌 贺兵强 朱小峰 童喆敏 张长生 龚正 于 2020-07-27 设计创作，主要内容包括：本发明揭示了一种桥梁支座位移监测系统及方法,所述系统包括服务器及至少一监测终端,所述服务器分别连接各监测终端；监测终端包括控制电路、姿态获取模块、通讯模块及电源模块；控制电路分别连接姿态获取模块及通讯模块；电源模块分别连接控制电路、姿态获取模块及通讯模块,为其提供工作所需的电能；姿态获取模块设置于对应支座辊轴,用以获取对应支座辊轴的姿态信息；服务器包括监测模块,获取各监测终端获取的数据,并根据各监测终端中姿态获取模块获取的姿态信息计算支座辊轴偏离的弧长数据,从而获取对应支座辊轴偏离位移的数值。本发明提出的桥梁支座位移监测系统及方法,可实时监测桥梁支座是否处于危险状态,能即时报警。(The invention discloses a system and a method for monitoring displacement of a bridge bearing, wherein the system comprises a server and at least one monitoring terminal, and the server is respectively connected with each monitoring terminal; the monitoring terminal comprises a control circuit, an attitude acquisition module, a communication module and a power supply module; the control circuit is respectively connected with the attitude acquisition module and the communication module; the power supply module is respectively connected with the control circuit, the attitude acquisition module and the communication module and provides electric energy required by work for the attitude acquisition module and the communication module; the attitude acquisition module is arranged on the corresponding support roller shaft and used for acquiring attitude information of the corresponding support roller shaft; the server comprises monitoring modules, the data acquired by each monitoring terminal are acquired, arc length data of the deviation of the support roller shaft are calculated according to the attitude information acquired by the attitude acquisition modules in each monitoring terminal, and accordingly the numerical value of the deviation displacement of the corresponding support roller shaft is acquired. The bridge support displacement monitoring system and method provided by the invention can monitor whether the bridge support is in a dangerous state in real time and can give an alarm in real time.)
1. A bridge bearing displacement monitoring system, the system comprising: the system comprises a server and at least one monitoring terminal, wherein each monitoring terminal is connected with the server through a wireless communication module;
the bridge support comprises an upper pendulum, a lower pendulum, a tooth plate, a bottom plate, a plurality of roll shafts and a connecting plate; the upper pendulum is connected with the lower pendulum, the lower pendulum is provided with a tooth plate groove, and the tooth plate groove can be connected with a corresponding tooth plate; at least part of the roll shafts are connected with tooth plates, the upper end of each tooth plate is connected with the lower hem, and the lower end of each tooth plate is connected with the bottom plate; each roll shaft is connected through at least two connecting plates; at least one roll shaft is provided with an angle sensor for sensing the inclination angle information of the roll shaft;
the monitoring terminal comprises a control circuit, an attitude acquisition module, a first temperature sensor, a second temperature sensor, a communication module and a power module; the control circuit is respectively connected with the attitude acquisition module, the first temperature sensor, the second temperature sensor and the communication module;
the power supply module is respectively connected with the control circuit, the attitude acquisition module, the first temperature sensor, the second temperature sensor and the communication module and provides electric energy required by work for the attitude acquisition module;
the attitude acquisition module is arranged on the corresponding support roller shaft and used for acquiring attitude information of the corresponding support roller shaft; the attitude acquisition module comprises a three-axis gyroscope, a three-axis accelerometer, a three-axis electronic compass and an inclination angle sensor; the attitude acquisition module is used for acquiring an included angle numerical value between a gravity vertical axis and a sensitive axis of the acceleration sensor;
the first temperature sensor is arranged on the support roller shaft and used for sensing the temperature of the support roller shaft; the second temperature sensor is used for sensing the ambient temperature;
the server comprises a monitoring module, and the monitoring module acquires data acquired by each monitoring terminal; the monitoring module comprises a deviation displacement correction unit used for correcting deviation displacement information according to the data sensed by the first temperature sensor, the second temperature sensor and the attitude acquisition module; correcting through a correction parameter table, wherein correction information of included angle numerical values corresponding to the temperatures of the roll shafts of the support seats, the ambient temperatures and the included angle numerical values is recorded in the correction parameter table;
the monitoring module calculates the arc length data of the deviation of the support roller shaft according to the included angle numerical value correction information acquired by the deviation displacement correction unit, so as to acquire the numerical value of the deviation displacement of the corresponding support roller shaft;
the monitoring module calculates the dynamic change of the corresponding deviation displacement and the maximum change of the deviation displacement according to the data corrected by the deviation displacement correction unit, compares the dynamic change of the corresponding deviation displacement with a set threshold value and judges whether to send an alarm signal or not;
each monitoring terminal is respectively arranged on the bridge piers, and data are transmitted from one bridge pier to the other bridge pier to the last bridge pier through a ZigBee wireless communication transfer scheme; and the monitoring terminal arranged on the last bridge pier is sent to the server in a wireless communication mode.
2. A bridge bearing displacement monitoring system, the system comprising: the system comprises a server and at least one monitoring terminal, wherein the server is connected with each monitoring terminal respectively;
the monitoring terminal comprises a control circuit, an attitude acquisition module, a communication module and a power supply module; the control circuit is respectively connected with the attitude acquisition module and the communication module; the power supply module is respectively connected with the control circuit, the attitude acquisition module and the communication module and provides electric energy required by work for the attitude acquisition module and the communication module;
the attitude acquisition module is arranged on the corresponding support roller shaft and used for acquiring attitude information of the corresponding support roller shaft;
the server comprises monitoring modules, the data acquired by each monitoring terminal are acquired, arc length data of the deviation of the support roller shaft are calculated according to the attitude information acquired by the attitude acquisition modules in each monitoring terminal, and accordingly the numerical value of the deviation displacement of the corresponding support roller shaft is acquired.
3. The bridge bearer displacement monitoring system of claim 2, wherein:
the attitude acquisition module is used for acquiring an included angle numerical value between a gravity vertical axis and a sensitive axis of the acceleration sensor.
4. The bridge bearer displacement monitoring system of claim 2, wherein:
the attitude acquisition module comprises an inclination angle sensor, and the inclination angle sensor is used for acquiring the numerical value of an included angle between the axis of the corresponding support roller shaft and a set reference.
5. The bridge bearer displacement monitoring system of claim 2, wherein:
the monitoring terminal is connected with the server through a wireless communication module.
6. The bridge bearer displacement monitoring system of claim 2, wherein:
the monitoring terminal also comprises a first temperature sensor and a second temperature sensor; the first temperature sensor is arranged on the support roller shaft and used for sensing the temperature of the support roller shaft; the second temperature sensor is used for sensing the ambient temperature;
the monitoring module comprises a deviation displacement correction unit used for correcting deviation displacement information according to the data sensed by the first temperature sensor, the second temperature sensor and the attitude acquisition module; and correcting through the correction parameter table, wherein the correction parameter table records deviation displacement information corresponding to the roll shaft temperature of each support, the environment temperature and the posture information.
7. The bridge bearer displacement monitoring system of claim 2, wherein:
each monitoring terminal is respectively arranged on the bridge piers, and data are transmitted from one bridge pier to the other bridge pier to the last bridge pier through a ZigBee wireless communication transfer scheme; and sending the bridge pier to a server in a wireless communication mode.
8. The bridge bearer displacement monitoring system of claim 2, wherein:
the server further comprises:
the alarm dynamic monitoring module is used for dynamically monitoring the inclination angle of each support roller shaft, converting the inclination angle into a numerical value of an arc length, the temperature of each support roller shaft and the ambient temperature, displaying alarm information in red if the support roller shafts are abnormal, and selecting sound to alarm;
and the graph statistical module is used for searching the database according to the conditions, outputting the search result in a graph mode and importing the query data into a set file.
9. The bridge bearer displacement monitoring system of claim 2, wherein:
the bridge support comprises an upper pendulum, a lower pendulum, a tooth plate, a bottom plate, a plurality of roll shafts and a connecting plate; the upper pendulum is connected with the lower pendulum, the lower pendulum is provided with a tooth plate groove, and the tooth plate groove can be connected with a corresponding tooth plate; at least part of the roll shafts are connected with tooth plates, the upper end of each tooth plate is connected with the lower hem, and the lower end of each tooth plate is connected with the bottom plate; each roll shaft is connected through at least two connecting plates; at least one roller is equipped with angle sensor for the inclination information of response roller.
10. A bridge bearing displacement monitoring method is characterized by comprising the following steps:
the attitude acquisition module acquires attitude information corresponding to the support roller shaft;
and acquiring data acquired by each monitoring terminal, and calculating arc length data according to the attitude information of the support roller shaft acquired by each attitude acquisition module so as to acquire a numerical value corresponding to the deviation displacement of the support roller shaft.
Technical Field
The invention belongs to the technical field of bridge monitoring, relates to a bridge monitoring system, and particularly relates to a bridge support displacement monitoring system and method.
Background
As a component of the traffic system, bridges play an important role in the development and evolution of human civilization. With the development of modern science and technology and the continuous increase of transportation demand, large bridges (such as sea-crossing bridges, large-span bridges and the like) are more and more appeared in the visual field of people, the manufacturing cost of the bridges is hundreds of millions or even billions of yuan, and the bridges have important strategic significance in the aspects of transportation, military affairs, social life and the like.
However, during the construction and use of bridges, due to the erosion of environment and harmful substances, the action of vehicles, wind, earthquake, fatigue, human factors, and the continuous degradation of the performance of materials, various parts of the structure are damaged and degraded to different degrees before the design life is reached. If the damage cannot be detected and maintained in time, the driving safety is influenced and the service life of the bridge is shortened, and the bridge is damaged and collapsed suddenly.
If the damage estimation on the bridge is insufficient, the best maintenance time is probably lost, the bridge damage process is accelerated, and the service life of the bridge is shortened. If the damage estimation to the bridge is too high, unnecessary fund waste is caused, so that the bearing capacity of the bridge cannot be fully exerted.
At present, the mode of directly monitoring damage and deterioration is to measure displacement (arc length of support rotation), manually measure the upper and lower sides of each pier every week for 2 times, manually input the displacement into a computer and manufacture the displacement into a report railway pipeline department. The manual measurement has the defects of large error, difficult determination of reference position, untimely alarm, large workload, easy occurrence of accidents of measurement personnel and the like.
Therefore, the traditional bridge detection depends on the experience of managers and technicians to a great extent, a scientific system method is lacked, the conditions of the bridge, particularly a large bridge, are often lacked of comprehensive grasp and understanding, and information cannot be fed back in time.
In view of the above, there is an urgent need to design a new bridge displacement monitoring method to overcome at least some of the above-mentioned disadvantages of the existing bridge displacement monitoring methods.
Disclosure of Invention
The invention provides a system and a method for monitoring displacement of a bridge bearing, which can monitor whether the bridge bearing is in a dangerous state in real time and can give an alarm in real time.
In order to solve the technical problem, according to one aspect of the present invention, the following technical solutions are adopted:
a bridge bearing displacement monitoring system, the system comprising: the system comprises a server and at least one monitoring terminal, wherein each monitoring terminal is connected with the server through a wireless communication module;
the bridge support comprises an upper pendulum, a lower pendulum, a tooth plate, a bottom plate, a plurality of roll shafts and a connecting plate; the upper pendulum is connected with the lower pendulum, the lower pendulum is provided with a tooth plate groove, and the tooth plate groove can be connected with a corresponding tooth plate; at least part of the roll shafts are connected with tooth plates, the upper end of each tooth plate is connected with the lower hem, and the lower end of each tooth plate is connected with the bottom plate; each roll shaft is connected through at least two connecting plates; at least one roll shaft is provided with an angle sensor for sensing the inclination angle information of the roll shaft;
the monitoring terminal comprises a control circuit, an attitude acquisition module, a first temperature sensor, a second temperature sensor, a communication module and a power module; the control circuit is respectively connected with the attitude acquisition module, the first temperature sensor, the second temperature sensor and the communication module;
the power supply module is respectively connected with the control circuit, the attitude acquisition module, the first temperature sensor, the second temperature sensor and the communication module and provides electric energy required by work for the attitude acquisition module;
the attitude acquisition module is arranged on the corresponding support roller shaft and used for acquiring attitude information of the corresponding support roller shaft; the attitude acquisition module comprises a three-axis gyroscope, a three-axis accelerometer, a three-axis electronic compass and an inclination angle sensor; the attitude acquisition module is used for acquiring an included angle numerical value between a gravity vertical axis and a sensitive axis of the acceleration sensor;
the first temperature sensor is arranged on the support roller shaft and used for sensing the temperature of the support roller shaft; the second temperature sensor is used for sensing the ambient temperature;
the server comprises a monitoring module, and the monitoring module acquires data acquired by each monitoring terminal; the monitoring module comprises a deviation displacement correction unit used for correcting deviation displacement information according to the data sensed by the first temperature sensor, the second temperature sensor and the attitude acquisition module; correcting through a correction parameter table, wherein correction information of included angle numerical values corresponding to the temperatures of the roll shafts of the support seats, the ambient temperatures and the included angle numerical values is recorded in the correction parameter table;
the monitoring module calculates the arc length data of the deviation of the support roller shaft according to the included angle numerical value correction information acquired by the deviation displacement correction unit, so as to acquire the numerical value of the deviation displacement of the corresponding support roller shaft;
each monitoring terminal is respectively arranged on the bridge piers, and data are transmitted from one bridge pier to the other bridge pier to the last bridge pier through a ZigBee wireless communication transfer scheme; and the monitoring terminal arranged on the last bridge pier is sent to the server in a wireless communication mode.
According to another aspect of the invention, the following technical scheme is adopted: a bridge bearing displacement monitoring system, the system comprising: the system comprises a server and at least one monitoring terminal, wherein the server is connected with each monitoring terminal respectively;
the monitoring terminal comprises a control circuit, an attitude acquisition module, a communication module and a power supply module; the control circuit is respectively connected with the attitude acquisition module and the communication module; the power supply module is respectively connected with the control circuit, the attitude acquisition module and the communication module and provides electric energy required by work for the attitude acquisition module and the communication module;
the attitude acquisition module is arranged on the corresponding support roller shaft and used for acquiring attitude information of the corresponding support roller shaft;
the server comprises monitoring modules, the data acquired by each monitoring terminal are acquired, arc length data of the deviation of the support roller shaft are calculated according to the attitude information acquired by the attitude acquisition modules in each monitoring terminal, and accordingly the numerical value of the deviation displacement of the corresponding support roller shaft is acquired.
As an embodiment of the present invention, the attitude obtaining module is configured to obtain an included angle between a vertical gravity axis and a sensitive axis of the acceleration sensor.
As an embodiment of the present invention, the posture acquiring module includes an inclination sensor, and the inclination sensor is configured to acquire a value of an included angle between an axis of the corresponding support roller and a set reference.
As an embodiment of the present invention, the monitoring terminal is connected to the server through a wireless communication module.
As an embodiment of the present invention, the monitoring terminal further includes a first temperature sensor and a second temperature sensor; the first temperature sensor is arranged on the support roller shaft and used for sensing the temperature of the support roller shaft; the second temperature sensor is used for sensing the ambient temperature;
the monitoring module comprises a deviation displacement correction unit used for correcting deviation displacement information according to the data sensed by the first temperature sensor, the second temperature sensor and the attitude acquisition module; and correcting through the correction parameter table, wherein the correction parameter table records deviation displacement information corresponding to the roll shaft temperature of each support, the environment temperature and the posture information.
As an implementation mode of the invention, each monitoring terminal is respectively arranged on a bridge pier, and each monitoring terminal realizes that data is transmitted from one bridge pier to another bridge pier until the last bridge pier through a ZigBee wireless communication transfer scheme; and sending the bridge pier to a server in a wireless communication mode.
As an embodiment of the present invention, the server further includes:
the alarm dynamic monitoring module is used for dynamically monitoring the inclination angle of each support roller shaft, converting the inclination angle into a numerical value of an arc length, the temperature of each support roller shaft and the ambient temperature, displaying alarm information in red if the support roller shafts are abnormal, and selecting sound to alarm;
and the graph statistical module is used for searching the database according to the conditions, outputting the search result in a graph mode and importing the query data into a set file.
As an implementation mode of the invention, the bridge support comprises an upper pendulum, a lower pendulum, a tooth plate, a bottom plate, a plurality of roll shafts and a connecting plate; the upper pendulum is connected with the lower pendulum, the lower pendulum is provided with a tooth plate groove, and the tooth plate groove can be connected with a corresponding tooth plate; at least part of the roll shafts are connected with tooth plates, the upper end of each tooth plate is connected with the lower hem, and the lower end of each tooth plate is connected with the bottom plate; each roll shaft is connected through at least two connecting plates; at least one roller is equipped with angle sensor for the inclination information of response roller.
According to another aspect of the invention, the following technical scheme is adopted: a bridge bearing displacement monitoring method is characterized by comprising the following steps:
the attitude acquisition module acquires attitude information corresponding to the support roller shaft;
and acquiring data acquired by each monitoring terminal, and calculating arc length data according to the attitude information of the support roller shaft acquired by each attitude acquisition module so as to acquire a numerical value corresponding to the deviation displacement of the support roller shaft.
The invention has the beneficial effects that: the bridge support displacement monitoring system and method provided by the invention can monitor whether the bridge support is in a dangerous state in real time and can give an alarm in real time.
Drawings
Fig. 1 is a schematic composition diagram of a bridge bearing displacement monitoring system according to an embodiment of the present invention.
Fig. 2 is a flowchart of a bridge support displacement monitoring method according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a bridge bearing according to an embodiment of the present invention.
Fig. 4 is a circuit diagram of a control circuit according to an embodiment of the invention.
FIG. 5 is a circuit diagram of a USB interface circuit according to an embodiment of the present invention.
FIG. 6 is a circuit diagram of a display circuit according to an embodiment of the invention.
Fig. 7 is a schematic circuit diagram of a tilt sensor according to an embodiment of the invention.
Fig. 8 is a circuit diagram of a first temperature sensor according to an embodiment of the invention.
Fig. 9 is a circuit diagram of a second temperature sensor according to an embodiment of the invention.
FIG. 10 is a circuit diagram of a memory circuit according to an embodiment of the invention.
Fig. 11 is a circuit diagram of a key circuit according to an embodiment of the invention.
FIG. 12 is a circuit diagram of a power supply voltage regulator circuit according to an embodiment of the present invention.
Fig. 13 is a circuit diagram of a battery charging management circuit according to an embodiment of the invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
The description in this section is for several exemplary embodiments only, and the present invention is not limited only to the scope of the embodiments described. It is within the scope of the present disclosure and protection that the same or similar prior art means and some features of the embodiments may be interchanged.
The term "connected" in the specification includes both direct connection and indirect connection.
The invention discloses a bridge bearing displacement monitoring system, which comprises: the system comprises a server and at least one monitoring terminal, wherein the server is connected with each monitoring terminal respectively; the monitoring terminal comprises a control circuit, an attitude acquisition module, a communication module and a power supply module; the control circuit is respectively connected with the attitude acquisition module and the communication module; the power module is respectively connected with the control circuit, the attitude acquisition module and the communication module and provides electric energy required by work for the attitude acquisition module and the communication module. The attitude acquisition module is arranged on the corresponding support roller shaft and used for acquiring attitude information of the corresponding support roller shaft. The server comprises monitoring modules, the data acquired by each monitoring terminal are acquired, arc length data of the deviation of the support roller shaft are calculated according to the attitude information acquired by the attitude acquisition modules in each monitoring terminal, and accordingly the numerical value of the deviation displacement of the corresponding support roller shaft is acquired.
FIG. 1 is a schematic diagram of a bridge support displacement monitoring system according to an embodiment of the present disclosure; referring to fig. 1, the system includes: the monitoring system comprises a
The
The
FIG. 3 is a schematic structural diagram of a bridge support according to an embodiment of the present invention; referring to fig. 3, in an embodiment of the present invention, the
In addition, in an embodiment of the present invention, the
The
The
In one embodiment, the offset correction unit is configured to correct offset information according to data sensed by the
Referring to fig. 2, in an embodiment of the present invention, the
In an embodiment, the
In addition, the
FIG. 4 is a circuit diagram of a control circuit according to an embodiment of the present invention; referring to fig. 4, in an embodiment of the present invention, the control circuit includes a PIC single chip, but other chip structures may also be adopted.
FIG. 5 is a circuit diagram of a USB interface circuit according to an embodiment of the present invention; referring to fig. 5, in an embodiment of the invention, the USB interface circuit includes a first chip U1, a plurality of diodes, a capacitor, and a plurality of resistors. Of course, other USB circuits may be used.
FIG. 6 is a circuit diagram of a display circuit according to an embodiment of the present invention; referring to fig. 6, in an embodiment of the invention, the display circuit includes an LCD-12864 display screen, a transistor Q1, a plurality of resistors, and the like. Of course, other display circuits may be used.
FIG. 7 is a schematic circuit diagram of a tilt sensor according to an embodiment of the present invention; referring to fig. 7, in an embodiment of the invention, the tilt sensor includes a third chip U3, a fifth capacitor C5, and a second resistor R2; of course, other tilt sensor circuits may be employed.
FIG. 8 is a schematic circuit diagram of a first temperature sensor according to an embodiment of the present invention; referring to fig. 8, in an embodiment of the invention, the first temperature sensor includes a fifth chip U5 and a second resistor R22. Of course, other temperature sensor circuit configurations may be employed.
FIG. 9 is a schematic circuit diagram of a second temperature sensor according to an embodiment of the present invention; referring to fig. 9, in an embodiment of the invention, the second temperature sensor includes a sixth chip U6 and a second third resistor R23. Of course, other temperature sensor circuit configurations may be employed.
FIG. 10 is a circuit diagram of a memory circuit according to an embodiment of the present invention; referring to fig. 10, in an embodiment of the invention, the memory circuit includes a fourth chip U4, a first resistor R11, and a first resistor R12. Of course, other memory circuit configurations may be employed.
FIG. 11 is a circuit diagram of a key circuit according to an embodiment of the present invention; referring to fig. 11, in an embodiment of the present invention, the key circuit adopts the circuit structure shown in fig. 11; of course, other key circuit configurations may be used.
FIG. 12 is a circuit diagram of a power supply voltage regulator circuit according to an embodiment of the present invention; referring to fig. 12, in an embodiment of the invention, the power supply voltage stabilizing circuit adopts the circuit structure shown in fig. 12, and the power supply voltage stabilizing circuit includes a seventh chip U7 and a plurality of capacitors. Of course, other power supply voltage regulator circuit configurations may be used.
FIG. 13 is a circuit diagram of a battery charging management circuit according to an embodiment of the present invention; referring to fig. 13, in an embodiment of the invention, the battery charging management circuit adopts the circuit structure shown in fig. 13, and the battery charging management circuit includes the second chip U2, the second crystal Y2, and the lithium battery. Of course, other battery charge management circuit configurations may be used.
The invention also discloses a bridge support displacement monitoring method, which comprises the following steps:
step S1, the posture acquisition module acquires the posture information of the corresponding support roller shaft;
and step S2, acquiring data acquired by each monitoring terminal, and calculating arc length data according to the attitude information of the support roller shaft acquired by each attitude acquisition module, thereby acquiring a numerical value corresponding to the deviation displacement of the support roller shaft.
In summary, the system and the method for monitoring the displacement of the bridge bearing provided by the invention can monitor whether the bridge bearing is in a dangerous state in real time and can give an alarm in real time.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The description and applications of the invention herein are illustrative and are not intended to limit the scope of the invention to the embodiments described above. Effects or advantages referred to in the embodiments may not be reflected in the embodiments due to interference of various factors, and the description of the effects or advantages is not intended to limit the embodiments. Variations and modifications of the embodiments disclosed herein are possible, and alternative and equivalent various components of the embodiments will be apparent to those skilled in the art. It will be clear to those skilled in the art that the present invention may be embodied in other forms, structures, arrangements, proportions, and with other components, materials, and parts, without departing from the spirit or essential characteristics thereof. Other variations and modifications of the embodiments disclosed herein may be made without departing from the scope and spirit of the invention.
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