CN112985352A - Box girder monitoring method and system, electronic equipment and storage medium - Google Patents
Box girder monitoring method and system, electronic equipment and storage medium Download PDFInfo
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- CN112985352A CN112985352A CN202110531366.1A CN202110531366A CN112985352A CN 112985352 A CN112985352 A CN 112985352A CN 202110531366 A CN202110531366 A CN 202110531366A CN 112985352 A CN112985352 A CN 112985352A
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Abstract
The application discloses a box girder monitoring method, a system, electronic equipment and a storage medium, wherein the system comprises a first light emitting device, a first light detecting device, a first rotating device and a first processing device; the first light emitting device is arranged on a first rotating device which is used for rotating under the control of the processing unit; the first processing device is used for determining azimuth information of each monitoring point relative to the first light emitting device according to the design elevation of each monitoring point on the outer surface of the bottom of the box girder and the position of the first light emitting device relative to the reference surface, and controlling the first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point; the first optical detection device is used for detecting optical signals received by the monitoring point or optical signals reflected by the monitoring point; the first processing device is also used for determining whether each monitoring point deviates from the design elevation or not according to the optical signals detected by the first optical detection device.
Description
Technical Field
The application relates to the technical field of intelligent monitoring, in particular to a box girder monitoring method and system, electronic equipment and a storage medium.
Background
The cast-in-place concrete box girder is mainly manufactured in a field wet operation mode, namely a concrete casting mode. The box girder in the large bridge is long, for example, the length can reach 80 meters, so 3-4 m is needed to be taken as a construction stage for segmented construction, the box girder needs to be monitored after one section of the box girder is constructed, the next section of the box girder is constructed after the bottom elevation of the box girder meets the design requirement, each construction stage comprises a plurality of processes such as fence hanging, pouring and tensioning, the bottom elevation of the box girder needs to be monitored before and after each process, and each process lasts for a plurality of days. At present, the box girder is monitored in a manual mode, each measurement at least needs to take half a day, and the operation is complex and the measurement accuracy is high.
Disclosure of Invention
The embodiment of the application provides a box girder monitoring method and system, an electronic device and a storage medium, and monitoring accuracy and monitoring efficiency are improved.
In a first aspect, an embodiment of the present application provides a box girder monitoring system, which includes a first light emitting device, a first light detecting device, a first rotating device, and a first processing device;
the first light emitting device is mounted on the first rotating device, and the first rotating device is used for rotating under the control of the processing unit so as to adjust the angle of the light signal emitted by the first light emitting device;
the first processing device is used for determining azimuth information of each monitoring point relative to the first light emitting device according to the design elevation of each monitoring point on the outer surface of the bottom of the box girder and the position of the first light emitting device relative to the reference surface, and controlling the first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point;
the first optical detection device is used for detecting optical signals received by the monitoring point or optical signals reflected by the monitoring point;
and the first processing device is also used for determining whether each monitoring point deviates from the design elevation or not according to the optical signals detected by the first optical detection device.
Optionally, when the system is in the construction monitoring mode, the first processing device is further configured to:
a response control terminal sends a first measurement instruction aiming at a current section of box girder in construction, and azimuth information of each first monitoring point relative to a first light emitting device is determined according to the design elevation of each first monitoring point on the current section of box girder and the position of the first light emitting device relative to a reference plane;
controlling the first rotating device to rotate according to the azimuth information corresponding to each first monitoring point, so that the first light emitting device sequentially emits light signals to each first monitoring point;
and determining whether each first monitoring point deviates from a design elevation or not according to the optical signals received by each first monitoring point or the optical signals reflected by the monitoring points detected by the first optical detection device and feeding back the optical signals to the control terminal.
Optionally, the first processing device is further configured to: and determining the actual elevation of each first monitoring point according to the intensity of the optical signal reflected by each first monitoring point detected by the first optical detection device.
Optionally, the first processing device is further configured to receive a design elevation of each second monitoring point on the next section of box girder, where the design elevation of each second monitoring point is determined based on an actual elevation of each first monitoring point, and the design elevation is sent by the control terminal.
Optionally, when the system is in the traffic monitoring mode, the first processing device is further configured to:
generating a second measurement instruction at fixed time;
and responding to the generated second measurement instruction, and controlling the first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point.
Optionally, the first light detection means is mounted on the first rotating means; alternatively, the first light detection means comprises light sensors mounted at respective monitoring points.
Optionally, a tilt sensor is mounted on the first light emitting device, and is used for detecting pose information of the first light emitting device;
the processing module is specifically configured to control the first rotating device to rotate according to the pose information of the first light emitting device and the orientation information of each monitoring point relative to the first light emitting device.
Optionally, the first light emitting device is installed on the pier supporting the box girder, and the first processing device is further configured to: acquiring an output signal of the inclination sensor, and determining vibration information of the box girder and the bridge pier based on the output signal, wherein the amplitude of the output signal is related to the vibration of the box girder and the bridge pier.
Optionally, when the system is in the traffic monitoring mode, the first processing device is further configured to: and determining whether a vehicle passes through the box girder and the position of the vehicle according to the output signal of the inclination angle sensor.
Optionally, the system further comprises a second monitoring device arranged in the hollow part in the box girder, wherein the second monitoring device comprises a second light emitting device, a second light monitoring device and a second processing device;
the second light emitting device is used for emitting light signals to each monitoring point on the inner surface of the bottom of the box girder;
the second optical detection device is used for detecting optical signals received by or reflected by each monitoring point on the inner surface of the bottom of the box girder;
and the second processing device is also used for determining whether each monitoring point deviates from the design elevation or not according to the optical signals detected by the second optical detection device.
In a second aspect, an embodiment of the present application provides a box girder monitoring method, including:
acquiring the design elevation of each monitoring point on the outer surface of the bottom of the box girder;
determining azimuth information of each monitoring point relative to the first light emitting device according to the designed elevation of each monitoring point on the outer surface of the bottom of the box girder and the position of the first light emitting device relative to the reference surface; wherein the first light emitting device is mounted on a first rotating device, and the angle of the light signal emitted by the first light emitting device is adjusted by the rotation of the first rotating device;
controlling a first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point; the first optical detection device is used for detecting optical signals received by the monitoring points or optical signals reflected by the monitoring points;
and determining whether each monitoring point deviates from the design elevation or not according to the optical signal detected by the first optical detection device.
In a third aspect, an embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of any one of the methods when executing the computer program.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having stored thereon computer program instructions, which, when executed by a processor, implement the steps of any of the methods described above.
In a fifth aspect, an embodiment of the present application provides a computer program product or a computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method provided in any of the various alternative implementations of control of TCP transmission performance described above.
According to the box girder monitoring method and system provided by the embodiment of the application, the construction condition in the construction process of the box girder is monitored through the optical signals, compared with manual measurement, the monitoring accuracy can be greatly improved, the box girder is ensured not to deviate from the design elevation, automatic measurement of multiple monitoring points is realized by controlling one first light emitting device through the first processing device, the purpose of monitoring while constructing the box girder is realized, the installation position of equipment does not need to be adjusted repeatedly, and the monitoring efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a box girder process;
fig. 2 is a schematic structural diagram of a box girder monitoring system provided in an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a box girder provided in an embodiment of the present application;
fig. 4 is a schematic position diagram of a box girder monitoring system and a monitoring point provided in an embodiment of the present application;
fig. 5A is a schematic view of an installation manner of a second monitoring device inside a box girder according to an embodiment of the present application;
fig. 5B is a schematic view of another installation manner of the second monitoring device inside the box girder according to the embodiment of the present application;
fig. 6 is a schematic flow chart of a box girder monitoring method according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be noted that, in the case of no conflict, the features in the following embodiments and examples may be combined with each other; moreover, based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without any creative effort belong to the protection scope of the present disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
For convenience of understanding, terms referred to in the embodiments of the present application are explained below:
a box girder: the hollow beam is one of the middle beams in bridge engineering, the inner part of the hollow beam is hollow, and flanges are arranged on two sides of the upper part of the hollow beam, and the hollow beam is similar to a box, so that the hollow beam is named.
Taking fig. 1 as an example, in an actual construction process, a designer can give construction parameters of the first section of box girder, including design elevations of each monitoring point on the first section of box girder, and the constructor constructs the first section of box girder according to the construction parameters and monitors each monitoring point in the construction process. After the first section of box girder is built, performing a series of measurements on the first section of box girder, feeding back measurement data to a designer after determining that each index of the first section of box girder conforms to the building parameters, calculating the building parameters of the second section of box girder by the designer according to the fed-back measurement data, building the second section of box girder by the constructor according to the building parameters of the second section of box girder, and so on.
Elevation: the distance from a certain point to an absolute datum plane along the direction of a plumb line is called absolute elevation, and is called elevation for short. The distance from a certain point to a certain supposed level datum plane along the direction of the plumb line is called as supposed elevation.
An inclination angle sensor: also known as inclinometers, gradiometers, inclinometers, are often used for horizontal angular change measurements of systems. The inclination sensor integrates the MCU, the MEMS accelerometer, the analog-to-digital conversion circuit and the communication unit on a very small circuit board. Can directly output inclination data such as angles and the like, and enables people to use the inclination data more conveniently.
A light emitting device: a device capable of generating an optical signal. The light emitter in the embodiment of the application can be a laser for generating optical signals of specific wave bands, the collimation of the laser is good, the brightness is high, the divergence angle is small, and the monitoring precision and accuracy can be improved. The Light emitter in the embodiment of the present application may also be a common Light source device, such as an LED (Light-Emitting Diode), and for a common Light source, the emitted Light signal may be focused by an optical system, so as to improve the collimation of the Light signal.
A light detection device: is a device that converts an optical signal into an electrical signal, including but not limited to: phototube, photomultiplier, photoresistor, photodiode, phototriode, photocell, etc. In the embodiment of the application, the optical receiver sensitive to the waveband can be selected according to the waveband of the optical signal emitted by the selected optical transmitter.
This is explained in detail below with reference to the figures and the detailed description. Although the embodiments of the present application provide the method operation steps as shown in the following embodiments or figures, more or less operation steps may be included in the method based on the conventional or non-inventive labor. In steps where no necessary causal relationship exists logically, the order of execution of the steps is not limited to that provided by the embodiments of the present application.
Referring to fig. 2, an embodiment of the present application provides a box girder monitoring system 20, including a first monitoring device, where the first monitoring device includes: a first light emitting means 201, a first light detecting means 202, a first rotating means 203 and a first processing means 204.
The first light emitting means may emit a light signal under the control of the first processing means. The first rotating device can be a holder, a turntable, a motor and the like, and can rotate in the horizontal and vertical directions under the control of the first processing device. The first light emitting device can be mounted on the first rotating device and can rotate along with the first rotating device, and the first rotating device rotates under the control of the processing unit to adjust the angle of the light signal emitted by the first light emitting device. The first processing device may be a general purpose Processor, such as a Central Processing Unit (CPU), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
A plurality of monitoring points are designated at the bottom of each section of box girder in advance, the positions and the number of the monitoring points can be set by designers according to actual requirements, for example, fig. 3 shows the cross section of one section of box girder, and a plurality of monitoring points 30 can be arranged at the bottom of the box girder. Before a section of box girder is built, the design elevation of each monitoring point is given according to the design requirement of the bridge, and the design elevation of each monitoring point is input into a box girder monitoring system. Therefore, the first processing device can determine the azimuth information of each monitoring point relative to the first light emitting device according to the design elevation of each monitoring point at the bottom of the box girder and the position of the first light emitting device relative to the reference surface, and control the first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point.
The design elevations in the implementation of the present application are all data relative to a datum plane. In practical application, the first light emitting device and the first rotating device can be fixed at fixed positions on or under a bridge pier, and no shielding object is arranged between the first light emitting device and a monitoring point in the monitoring process. Once the positions of the first light emitting means and the first rotating means are fixed, the position of the first light emitting means relative to the reference surface can be measured, including a height difference from the reference surface, an offset angle relative to the center line of the box girder, and the like. In practical application, a fixed mark position can be arranged on the roadside, the relative relation between the mark position and the reference surface is preset, and the first light emitting device can determine the distance between the first light emitting device and the reference surface based on the mark position, so that the positioning accuracy of the first light emitting device is improved.
Referring to fig. 4, for convenience of calculation, the installation positions of the first light emitting device and the first rotating device may be set right below the center line of the box girder, the height difference h from the first light emitting device to the reference plane is measured, and then the azimuth information of each monitoring point 30 relative to the first light emitting device is calculated according to the position of each section of the box girder, the designed length L of each section of the box girder, the position of the monitoring point 30 on each section of the box girder, and the designed elevation of the monitoring point 30, wherein the azimuth information may include an included angle with the reference plane (i.e., horizontal plane) and an included angle with the vertical direction, and may also include the distance from the monitoring point to the first light emitting device. The azimuth information corresponding to each monitoring point only needs to be calculated once, the azimuth information corresponding to each monitoring point can be stored in the storage unit of the first processing device, and only the azimuth information corresponding to each monitoring point needs to be called from the storage unit in the later monitoring process. In one example, the height difference h of the first light emitting device to the reference surface may be set to 50 cm. Two sides of a pier are respectively provided with a first light emitting device 201 for respectively measuring box girders extending towards the two sides of the pier.
The first light detection device is used for detecting the light signal received by the monitoring point or the light signal reflected by the monitoring point. The first processing device is also used for determining whether each monitoring point deviates from the design elevation or not according to the optical signals of each monitoring point detected by the first optical detection device.
During specific implementation, if the monitoring point deviates from the designed elevation, the monitoring point cannot receive the optical signal, the optical signal cannot be reflected, or the optical signal received and reflected by the monitoring point is very weak. Therefore, it is possible to determine whether each monitoring point deviates from the design elevation based on the light intensity of the optical signal detected by the first light detecting means.
When the method is specifically implemented, the first processing device controls the first rotating device to rotate horizontally and vertically according to the azimuth information of the monitoring point relative to the first light emitting device until the first rotating device rotates to an azimuth angle corresponding to the azimuth information, then the first light emitting device is controlled to emit light signals, the first light detecting device detects the light signals received by the monitoring point or the light signals reflected by the monitoring point, and the first processing device determines whether the monitoring point deviates from a design elevation or not according to the light signals detected by the first light detecting device. After the first processing device monitors one monitoring point, the first rotating device is controlled to rotate in the horizontal and vertical directions according to the azimuth information of the next monitoring point relative to the first light emitting device so as to detect whether the next monitoring point deviates from the design elevation or not until all monitoring points needing to be detected are detected.
The box girder monitoring system of this application embodiment, through the construction condition in the optical signal monitoring box girder work progress, compare artifical measurement, can increase substantially the monitoring precision, guarantee that the box girder can not deviate design elevation, realize the automatic measure to many monitoring points through a first light emitting device of first processing apparatus control, realized that the purpose of monitoring is carried out while building the box girder, and need not adjust equipment mounted position repeatedly, improved monitoring efficiency.
In a possible embodiment, the first light detecting means may be mounted on the first rotating means to rotate together with the first rotating means, and the optical axes of the first light detecting means and the first light emitting means are maintained in a coaxial state to ensure that the first light detecting means can smoothly receive the optical signal reflected by the monitoring point. The first light detecting means and the first light emitting means may also be an integrated laser ranging device.
Based on this, can set up reflect meter at the monitoring point department, reflect meter to the reflectance of light signal is greater than the reflectance on case roof beam surface for improve the intensity of monitoring point reflected light signal.
During specific implementation, the first processing device controls the first rotating device to rotate horizontally and vertically according to azimuth information of the monitoring point relative to the first light emitting device until the first rotating device rotates to an azimuth angle corresponding to the azimuth information, then the first light emitting device is controlled to emit light signals, the light signals are reflected back to the first light detecting device by the reflecting device after reaching the monitoring point, the first light detecting device receives reflected light signals of the monitoring point, and the first processing device determines whether the monitoring point deviates from a design elevation or not according to the received reflected light signals. For example, if the monitoring point does not deviate from the designed elevation, most of the optical signals will be reflected by the reflection device, so that the light intensity of the reflected optical signals received by the first optical detection device is larger; if the monitoring point deviates from the designed elevation, only a small part of the optical signal will be reflected by the reflection device or the optical signal will not reach the reflection device, so that the light intensity of the reflected optical signal received by the first optical detection device is very small or the optical signal is not received. Therefore, a first light intensity threshold value of the reflected light signal can be determined according to actual test data, if the light intensity of the received reflected light signal is smaller than the first light intensity threshold value, the monitoring point is determined to deviate from the design elevation, and if not, the monitoring point is determined not to deviate from the design elevation.
In other optional embodiments, a distance value between a reflection point of the reflected light signal and the first light emitting device may be calculated according to the flight time of the light signal, the distance value is compared with a distance between the monitoring point and the first light emitting device, if a difference between the distance value and the distance between the monitoring point and the first light emitting device is within a preset error range, it is determined that the reflection point is the monitoring point, that is, it may be determined that the monitoring point is not deviated from the design elevation, otherwise, it is determined that the reflection point is not the monitoring point, and it may be determined that the monitoring point is deviated from the design elevation.
In another possible embodiment, the first light detection means may comprise light sensors mounted at respective monitoring points. Namely, each monitoring point is provided with an optical sensor, the optical sensor detects optical signals received by the corresponding monitoring point, and the optical sensor can send the detected optical signals to the first processing device in a wired or wireless communication mode.
If the monitoring point does not deviate from the designed elevation, the optical sensor of the monitoring point can receive a stronger optical signal; if the monitoring point deviates from the designed elevation, the optical sensor of the monitoring point can only receive partial optical signals or can not receive the optical signals. Therefore, the second light intensity threshold value can be determined according to actual test data, if the light intensity of the light signal received by the light sensor of a certain monitoring point is greater than the second light intensity threshold value, the monitoring point is determined to deviate from the design elevation, and if not, the monitoring point is determined not to deviate from the design elevation.
On the basis of any one of the above embodiments, the first light emitting device is further provided with an inclination sensor for detecting pose information of the first light emitting device. The processing module is specifically used for controlling the first rotating device to rotate according to the pose information of the first light emitting device and the azimuth information of each monitoring point relative to the first light emitting device, so as to accurately control the emission angle of the optical signal.
The tilt sensor measures an angle based on angular velocity and angular acceleration motions, so that the tilt sensor is sensitive to vibration, and vibration information can be obtained by analyzing an output signal of the tilt sensor. To this end, the first processing means is further adapted to: acquiring an output signal of the inclination sensor, and determining vibration information of the box girder and the bridge pier based on the output signal, wherein the amplitude of the output signal is related to the vibration of the box girder and the bridge pier. The vibration conditions of the box girder and the bridge pier are monitored through the tilt angle sensor, and construction safety and bridge safety are improved.
The box girder monitoring system of the embodiment of the application can be used for monitoring the box girder in the construction process and monitoring the box girder of the built bridge. Therefore, two working modes, namely a construction monitoring mode and a traffic monitoring mode, are preset, the construction monitoring mode is used for monitoring the box girder in the construction process, the traffic monitoring mode is used for monitoring the box girder of the built bridge, and different working modes correspond to different monitoring control methods so as to meet different monitoring requirements.
Constructors can issue various working instructions to the box girder monitoring system through the control terminal, and if the working mode of the box girder monitoring system is switched, the constructors can issue various working instructions to the box girder monitoring system. The control terminal includes, but is not limited to, an electronic device such as a desktop computer, a mobile phone, a mobile computer, and a tablet computer.
Before the first section of box girder is built, a designer can give the building parameters of the first section of box girder, including the design elevations of all monitoring points on the first section of box girder, and a constructor builds the first section of box girder according to the building parameters and monitors all the monitoring points in the building process. After the first section of box girder is built, performing a series of measurements on the first section of box girder, feeding back measurement data to a designer after determining that each index of the first section of box girder conforms to the building parameters, calculating the building parameters of the second section of box girder by the designer according to the fed-back measurement data, building the second section of box girder by the constructor according to the building parameters of the second section of box girder, and so on.
Therefore, after the construction parameters of each section of box girder are determined, the parameters required by the box girder monitoring system can be sent to the girder monitoring system, such as the elevation of each monitoring point. When monitoring is needed, a first measurement instruction is sent to the box girder monitoring system through the control terminal.
When the box girder monitoring system is in the construction monitoring mode, the first processing device is further used for: the method comprises the steps that a response control terminal sends a first measurement instruction aiming at a current section of box girder in construction, and azimuth information of each first monitoring point relative to a first light emitting device is determined according to the design elevation of each first monitoring point on the current section of box girder and the position of the first light emitting device relative to a reference plane; controlling the first rotating device to rotate according to the azimuth information corresponding to each first monitoring point, so that the first light emitting device sequentially emits light signals to each first monitoring point; and determining whether each first monitoring point deviates from the design elevation or not according to the optical signals received by the first monitoring points or the optical signals reflected by the monitoring points detected by the first optical detection device, and feeding the monitoring results back to the control terminal. The method for determining whether the first monitoring point deviates from the design elevation may refer to the previous embodiment, and is not described in detail.
Once any first monitoring point is found to deviate from the design elevation, the box girder monitoring system or the control terminal can send an alarm prompt, and at the moment, a constructor needs to adjust the currently constructed box girder.
Further, the first processing device is further configured to: and determining the actual elevation of each first monitoring point according to the intensity of the optical signal detected by the first optical detection device.
When the first optical detection device is installed on the first rotating device, the actual elevation of each first monitoring point can be determined according to the intensity of the optical signal reflected by each first monitoring point detected by the first optical detection device.
When the first rotating device rotates, the first light emitting device scans the reflecting device at the first monitoring point within a certain angle range, when the intensity of the light signal detected by the first light detecting device is greater than a first light intensity threshold value, the light is indicated to be projected onto the reflecting device at the first monitoring point, the first rotating device stops rotating, the current pose information of the first light emitting device is detected, the position information of the first monitoring point relative to the first light emitting device is calculated according to the current pose information, and the actual elevation of the first monitoring point is obtained.
When the first light detection means comprises a light sensor installed at each monitoring point, the actual elevation of each first monitoring point can be determined according to the intensity of the light signal received by each first monitoring point detected by the first light detection means.
When the first rotating device rotates, the first light emitting device scans the light sensor at the first monitoring point within a certain angle range, when the intensity of a light signal detected by the light sensor at the first monitoring point is greater than a second light intensity threshold value, the light is indicated to be projected onto the light sensor at the first monitoring point, the first rotating device stops rotating, the current pose information of the first light emitting device is detected, the position information of the first monitoring point relative to the first light emitting device is calculated according to the current pose information, and the actual elevation of the first monitoring point is obtained.
Further, the first processing device is further configured to receive a design elevation of each second monitoring point on the next section of box girder, where the design elevation of each second monitoring point is determined based on an actual elevation of each first monitoring point, and the design elevation is sent by the control terminal. And when a first measurement instruction aiming at the next section of box girder sent by the control terminal is received, detecting the elevation of each second detection point in real time based on the design elevation of each second monitoring point on the next section of box girder.
In practical application, the construction process of one section of box girder comprises a plurality of processes of hanging fences, pouring, tensioning and the like, a first measurement instruction can be sent to a box girder monitoring system before and after each process is carried out, the height of the box girder is detected before and after each process, and abnormality is found in time.
After the construction of the whole box girder is completed, the box girder monitoring system can be set to a traffic monitoring mode, and at this time, the first processing device is used for: generating a second measurement instruction at fixed time; and responding to the generated second measurement instruction, and controlling the first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point.
Under the monitoring mode of traffic, box girder monitoring system regularly scans all monitoring points on the box girder, monitors each monitoring point, sends out early warning information when finding the monitoring point deviates from the design elevation, discovers the deformation problem of box girder in the use in advance, prevents the fracture collapse accident from appearing in the box girder.
When the box girder monitoring system is in a traffic monitoring mode, the first processing device is further used for determining whether a vehicle passes through the box girder and the position of the vehicle according to the output signal of the inclination angle sensor.
Taking a railway bridge as an example, when a train passes through the bridge floor, the output signal of the inclination angle sensor can generate a large number of vibration waveforms, and the distance between the train and the inclination angle sensor is inversely related to the amplitude of the vibration waveforms, so that the distance between the train and the inclination angle sensor can be determined according to the amplitude of the output signal, and the position of the train on the bridge can be obtained.
On the basis of any one of the above embodiments, the box girder monitoring system further comprises a second monitoring device, the second monitoring device comprises a second light emitting device, a second light monitoring device and a second processing device, and the second monitoring device is arranged in the hollow part in the box girder so as to detect the monitoring point inside the box girder. The second light emitting device is used for emitting light signals to each monitoring point on the inner surface of the bottom of the box girder; the second optical detection device is used for detecting optical signals received by or reflected by each monitoring point on the inner surface of the bottom of the box girder; and the second processing device is also used for determining whether each monitoring point deviates from the design elevation or not according to the optical signals detected by the second optical detection device.
In a possible embodiment, the second monitoring device further comprises a second rotating means, the second light emitting means is mounted on the second rotating means, and the second rotating means is configured to rotate under the control of the second processing unit to adjust the angle at which the second light emitting means emits the light signal; the second processing device is used for determining azimuth information of each monitoring point relative to the second light emitting device according to the designed elevation of each monitoring point on the inner surface of the bottom of the box girder and the position of the second light emitting device relative to the reference surface, and controlling the second rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the second light emitting device sequentially emits light signals to each monitoring point; the second optical detection device is used for detecting the optical signal received by the monitoring point or the optical signal reflected by the monitoring point; the second processing device is also used for determining whether each monitoring point deviates from the design elevation or not according to the optical signals detected by the second optical detection device.
The design elevation of each monitoring point on the inner surface of the bottom of the box girder can be provided by related personnel, and can also be determined according to the design elevation of each monitoring point on the outer surface of the bottom of the box girder and the thickness of the bottom of the box girder.
Taking fig. 5A as an example, the second monitoring device is arranged in a hollow part in the box girder, wherein the second light emitting device 401 can be fixed at the center line position of the first section of the box girder by the mounting rod, a plurality of monitoring points 31 can be arranged on the inner surface of the bottom of each section of the box girder, and the positions of the monitoring points 31 on the inner surface can correspond to the positions of the monitoring points on the outer surface of the bottom of the box girder, as shown in fig. 3. Similar to the implementation manner of the first light detection device, the second light detection device may be mounted on the second rotating device, and rotates together with the second rotating device, the optical axes of the second light detection device and the second light emission device maintain a coaxial state, and the second light detection device and the second light emission device may also be an integrated laser distance measuring apparatus, based on which a reflection device may be arranged at the monitoring point 31 on the inner surface of the bottom of the box beam, and the reflectivity of the reflection device to the light signal is greater than that of the surface of the box beam, so as to improve the intensity of the light signal reflected by the monitoring point. Alternatively, the second light detection means may comprise light sensors mounted at respective monitoring points 31 on the inner surface of the bottom of the box girder. The detection principle of the second optical detection device is similar to that of the first optical detection device, and is not described in detail.
The specific implementation manner and the measurement principle of the second monitoring device may refer to the first monitoring device, and are not described in detail.
In another possible embodiment, referring to fig. 5B, the second monitoring device comprises a plurality of second light emitting means 401 and a plurality of second light detecting means, the second light emitting means 401 and the second light detecting means corresponding one to one, each set of second light emitting means 401 and second light detecting means being used to detect one monitoring point 31. Each second light emitting means 401 is used for transmitting an optical signal to the corresponding monitoring point 31, and the corresponding second light detecting means can be arranged at the monitoring point 31 to detect the optical signal received at the monitoring point 31; alternatively, a reflecting means may be provided at the monitoring point 31 and a corresponding second light detecting means may be provided at the second light emitting means 401 to detect the light signal reflected by the reflecting means at the monitoring point 31. The second processing device determines whether each monitoring point 31 deviates from the design elevation according to the optical signal received by the second optical detection device corresponding to each monitoring point 31, and the specific processing mode may refer to the first processing device, which is not described again.
It should be noted that, the light emitting device and the detecting device in the embodiment of the present application may be powered by a wired manner, or a battery or a solar panel may be provided for the light emitting device and the detecting device, so as to ensure the power supply of the device, avoid wiring, and reduce the workload of installation. The first processing device and the second processing device may be the same processing device.
As shown in fig. 6, based on the same inventive concept as the box girder monitoring system, the embodiment of the present application further provides a box girder monitoring method, which is applied to the first processing apparatus shown in fig. 2, and specifically includes the following steps:
s601, obtaining the design elevation of each monitoring point on the outer surface of the bottom of the box girder.
S602, determining azimuth information of each monitoring point relative to the first light emitting device according to the design elevation of each monitoring point on the outer surface of the bottom of the box girder and the position of the first light emitting device relative to the reference surface.
Wherein the first light emitting device is mounted on a first rotating device, and the angle of the light signal emitted by the first light emitting device is adjusted by the rotation of the first rotating device.
S603, controlling the first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point.
Wherein, each monitoring point is provided with a reflection device, and the first light detection device is used for detecting the light signal received by the monitoring point or the light signal reflected by the monitoring point.
And S604, determining whether each monitoring point deviates from the design elevation or not according to the optical signals detected by the first optical detection device.
Optionally, when the box girder monitoring system is in the construction monitoring mode, the box girder monitoring method according to the embodiment of the application further includes the following steps: a response control terminal sends a first measurement instruction aiming at a current section of box girder in construction, and azimuth information of each first monitoring point relative to a first light emitting device is determined according to the design elevation of each first monitoring point on the current section of box girder and the position of the first light emitting device relative to a reference plane; controlling the first rotating device to rotate according to the azimuth information corresponding to each first monitoring point, so that the first light emitting device sequentially emits light signals to each first monitoring point; and determining whether each first monitoring point deviates from a design elevation or not according to the optical signals received by each first monitoring point or the optical signals reflected by the monitoring points detected by the first optical detection device and feeding back the optical signals to the control terminal.
Optionally, the box girder monitoring method according to the embodiment of the present application further includes the following steps: and determining the actual elevation of each first monitoring point according to the intensity of the optical signal reflected by each first monitoring point detected by the first optical detection device.
Optionally, the box girder monitoring method according to the embodiment of the present application further includes the following steps: and receiving the design elevation of each second monitoring point on the next section of box girder sent by the control terminal, wherein the design elevation of each second monitoring point is determined based on the actual elevation of each first monitoring point.
Optionally, when the box girder monitoring system is in a traffic monitoring mode, the box girder monitoring method according to the embodiment of the application further includes the following steps: generating a second measurement instruction at fixed time; and responding to the generated second measurement instruction, and controlling the first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point.
Optionally, the first light detection means is mounted on the first rotating means; alternatively, the first light detection means comprises light sensors mounted at respective monitoring points.
Optionally, the first light emitting device is provided with an inclination sensor for detecting pose information of the first light emitting device.
Based on this, step S603 specifically includes: and controlling the first rotating device to rotate according to the pose information of the first light emitting device and the azimuth information of each monitoring point relative to the first light emitting device.
Optionally, the first light emitting device is installed on the pier supporting the box girder, and the box girder monitoring method according to the embodiment of the present application further includes the following steps: acquiring an output signal of the inclination sensor, and determining vibration information of the box girder and the bridge pier based on the output signal, wherein the amplitude of the output signal is related to the vibration of the box girder and the bridge pier.
Optionally, when the box girder monitoring system is in a traffic monitoring mode, the box girder monitoring method according to the embodiment of the application further includes the following steps: and determining whether a vehicle passes through the box girder and the position of the vehicle according to the output signal of the inclination angle sensor.
Optionally, the box girder monitoring system further comprises a second monitoring device disposed in the hollow portion of the box girder, and the second monitoring device comprises a second light emitting device and a second light monitoring device, wherein the second light emitting device is configured to emit a light signal to each monitoring point on the inner surface of the bottom of the box girder, and the second light detecting device is configured to detect a light signal received or reflected by each monitoring point on the inner surface of the bottom of the box girder. Based on this, the box girder monitoring method of the embodiment of the application further comprises the following steps: and determining whether each monitoring point on the inner surface of the bottom of the box girder deviates from the designed elevation or not according to the optical signal detected by the second optical detection device.
The box girder monitoring method provided by the embodiment of the application and the box girder monitoring system adopt the same inventive concept, can obtain the same beneficial effects, and are not repeated herein.
Based on the same inventive concept as the box girder monitoring method, the embodiment of the present application further provides an electronic device, as shown in fig. 7, the electronic device 70 may include a processor 701 and a memory 702.
The Processor 701 may be a general-purpose Processor, such as a Central Processing Unit (CPU), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic blocks disclosed in the embodiments of the present Application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; the computer storage media may be any available media or data storage device that can be accessed by a computer, including but not limited to: various media that can store program codes include a removable Memory device, a Random Access Memory (RAM), a magnetic Memory (e.g., a flexible disk, a hard disk, a magnetic tape, a magneto-optical disk (MO), etc.), an optical Memory (e.g., a CD, a DVD, a BD, an HVD, etc.), and a semiconductor Memory (e.g., a ROM, an EPROM, an EEPROM, a nonvolatile Memory (NAND FLASH), a Solid State Disk (SSD)).
Alternatively, the integrated units described above in the present application may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or portions thereof contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media that can store program codes include a removable Memory device, a Random Access Memory (RAM), a magnetic Memory (e.g., a flexible disk, a hard disk, a magnetic tape, a magneto-optical disk (MO), etc.), an optical Memory (e.g., a CD, a DVD, a BD, an HVD, etc.), and a semiconductor Memory (e.g., a ROM, an EPROM, an EEPROM, a nonvolatile Memory (NAND FLASH), a Solid State Disk (SSD)).
The above embodiments are only used to describe the technical solutions of the present application in detail, but the above embodiments are only used to help understanding the method of the embodiments of the present application, and should not be construed as limiting the embodiments of the present application. Modifications and substitutions that may be readily apparent to those skilled in the art are intended to be included within the scope of the embodiments of the present application.
Claims (10)
1. A box girder monitoring system, comprising: the first light emitting device, the first light detecting device, the first rotating device and the first processing device;
the first light emitting device is mounted on the first rotating device, and the first rotating device is used for rotating under the control of the processing unit so as to adjust the angle of the light signal emitted by the first light emitting device;
the first processing device is used for determining azimuth information of each monitoring point relative to the first light emitting device according to the design elevation of each monitoring point on the outer surface of the bottom of the box girder and the position of the first light emitting device relative to the reference surface, and controlling the first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point;
the first optical detection device is used for detecting optical signals received by the monitoring point or optical signals reflected by the monitoring point;
and the first processing device is also used for determining whether each monitoring point deviates from the design elevation or not according to the optical signals detected by the first optical detection device.
2. The system of claim 1, wherein when the system is in a construction monitoring mode, the first processing device is further configured to:
a response control terminal sends a first measurement instruction aiming at a current section of box girder in construction, and azimuth information of each first monitoring point relative to a first light emitting device is determined according to the design elevation of each first monitoring point on the current section of box girder and the position of the first light emitting device relative to a reference plane;
controlling the first rotating device to rotate according to the azimuth information corresponding to each first monitoring point, so that the first light emitting device sequentially emits light signals to each first monitoring point;
and determining whether each first monitoring point deviates from a design elevation or not according to the optical signals received by each first monitoring point or the optical signals reflected by the monitoring points detected by the first optical detection device and feeding back the optical signals to the control terminal.
3. The system of claim 2, wherein the first processing device is further configured to: and determining the actual elevation of each first monitoring point according to the intensity of the optical signal reflected by each first monitoring point detected by the first optical detection device.
4. The system of claim 1, wherein when the system is in a traffic monitoring mode, the first processing device is further configured to:
generating a second measurement instruction at fixed time;
and responding to the generated second measurement instruction, and controlling the first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point.
5. The system of any one of claims 1 to 4, wherein the first light detection means is mounted on the first rotating means; alternatively, the first light detection means comprises light sensors mounted at respective monitoring points.
6. The system according to any one of claims 1 to 4, characterized in that the first light emitting device is installed on the pier supporting the box girder, and an inclination sensor is installed on the first light emitting device for detecting attitude and posture information of the first light emitting device;
the first processing device is further configured to: acquiring an output signal of the inclination sensor, and determining vibration information of the box girder and the bridge pier based on the output signal, wherein the amplitude of the output signal is related to the vibration of the box girder and the bridge pier.
7. The system according to any one of claims 1 to 4, further comprising a second monitoring device disposed in a hollow portion in the box girder, the second monitoring device comprising a second light emitting device, a second light monitoring device, and a second processing device;
the second light emitting device is used for emitting light signals to each monitoring point on the inner surface of the bottom of the box girder;
the second optical detection device is used for detecting optical signals received by or reflected by each monitoring point on the inner surface of the bottom of the box girder;
and the second processing device is also used for determining whether each monitoring point deviates from the design elevation or not according to the optical signals detected by the second optical detection device.
8. A box girder monitoring method is characterized by comprising the following steps:
acquiring the design elevation of each monitoring point on the outer surface of the bottom of the box girder;
determining azimuth information of each monitoring point relative to the first light emitting device according to the designed elevation of each monitoring point on the outer surface of the bottom of the box girder and the position of the first light emitting device relative to the reference surface; wherein the first light emitting device is mounted on a first rotating device, and the angle of the light signal emitted by the first light emitting device is adjusted by the rotation of the first rotating device;
controlling a first rotating device to rotate according to the azimuth information corresponding to each monitoring point, so that the first light emitting device sequentially emits light signals to each monitoring point; the first optical detection device is used for detecting optical signals received by the monitoring points or optical signals reflected by the monitoring points;
and determining whether each monitoring point deviates from the design elevation or not according to the optical signal detected by the first optical detection device.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method of claim 8 are performed when the computer program is executed by the processor.
10. A computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement the steps of the method of claim 8.
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