CN109120816B - Pier-centered intelligent support synchronous data acquisition method and network system - Google Patents
Pier-centered intelligent support synchronous data acquisition method and network system Download PDFInfo
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- CN109120816B CN109120816B CN201811251593.3A CN201811251593A CN109120816B CN 109120816 B CN109120816 B CN 109120816B CN 201811251593 A CN201811251593 A CN 201811251593A CN 109120816 B CN109120816 B CN 109120816B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Abstract
The invention discloses a synchronous data acquisition method of an intelligent support with a pier as a center and a network system. The system comprises the following components: the system comprises a main controller, N pier controllers and M acquisition devices; the N pier controllers are respectively arranged on the N piers; and a plurality of acquisition devices are arranged on each pier. By using the method and the network system provided by the invention, a pier controller is arranged on each pier to manage the Ethernet, a plurality of acquisition devices are arranged on each pier, the acquisition devices on each pier are only connected to the controller on the pier, and then the synchronous acquisition of data at two ends of the bridge is realized through the connection of synchronous cables, so that a distributed bridge analysis system taking the pier as the center is formed, and the synchronous acquisition and transmission of bridge data and the analysis of bridge load faults are realized simultaneously under the conditions of simple wiring and strong anti-interference capability, so that the problems of synchronous acquisition, transmission and fault analysis of support data can be solved.
Description
Technical Field
The invention relates to a support data acquisition and transmission technology, in particular to an intelligent support synchronous data acquisition method taking a pier as a center and a network system.
Background
The support is an important bearing part for connecting the bridge and the pier at the lower part of the bridge, and the supports at the two ends of the bridge need to be synchronously monitored in order to reflect the defects, damages, load changes and the like of the bridge structure.
In the existing bridge health monitoring technology, various sensors are distributed on a bridge, the collected bridge structure information is transmitted to a remote monitoring center by using a wired or wireless transmission network, and a server of the monitoring center analyzes and processes various collected data related to the bridge to early warn the state of the bridge.
In the existing bridge health monitoring technology, most of the systems are networks controlled by a central node, and bridge data acquired by sensors are directly transmitted to the central node. If the central node is placed on one side of the bridge, the data lines of the sensors of the adjacent supports are easy to arrange and install, but a plurality of cables are required to be laid for a long distance for a plurality of sensors on the supports on the other side of the bridge; moreover, one bridge is generally composed of a plurality of beams, so that the central node is also required to be connected with support sensors on other piers, so that the complexity of circuit layout is increased, and meanwhile, the data line interface of the central node is also complicated; in addition, as the transmission distance increases, the length of the cable also increases correspondingly, and the interference on the analog signals transmitted by the sensor also increases correspondingly, so that the data distortion is caused; meanwhile, the longer the distance of power transmission, the more energy loss. The same problem still exists when the central node is installed in the middle of a bridge.
Although some bridge monitoring systems solve the problems of wiring and signal interference by adopting a GPS and RS485 serial port, the problem of bandwidth limitation of synchronous data acquisition and real-time data transmission between sensors also occurs. For real-time data such as strain, displacement and the like, the data sampling rate is higher, and when the sampling rate is set to be 1ksps, one data is 24bits, and 10 sensors are arranged on one support, the data transmission rate needs to be more than 240 kbps. However, as the transmission distance increases, the transmission rate of the RS485 also decreases to several kbps or several tens of kbps, which cannot meet the requirement of sampling transmission data in real time; and if all the collected data are sent to the server side for centralized processing, the data volume is too large and too complex. In addition, if the bridge state is analyzed through the supports at the two ends of the bridge, the synchronization rate among the data at least needs to reach the millisecond order, and when a GPS time service system is used for sending synchronization signals to each sensor, the synchronization among the sensors cannot be accurately realized under the requirement of high sampling rate, and the cost is high.
In summary, since the above systems and methods in the prior art have the above disadvantages, it is an urgent need in the art to provide a simplified bridge monitoring network to achieve synchronization of data acquisition and data transmission with large capacity.
Disclosure of Invention
In view of the above, the present invention provides a bridge pier-centered intelligent support synchronous data acquisition method and a network system, so as to solve the problems of support data synchronous acquisition, transmission and disease analysis.
The technical scheme of the invention is realized as follows:
a synchronous data acquisition network system of wisdom support with pier as center, this system includes: the system comprises a main controller, N pier controllers and M acquisition devices;
the N pier controllers are respectively arranged on the N piers; a plurality of acquisition devices are arranged on each pier; the acquisition devices are all arranged on the pier supports; wherein N and M are both natural numbers, and M is greater than N;
the main controller is connected with the N pier controllers in sequence;
the main controller is connected with the adjacent bridge pier controllers through Ethernet network cables and synchronous cables;
two adjacent bridge pier controllers are connected with each other through an Ethernet network cable and a synchronous cable;
the pier controller and the acquisition device which are positioned on the same pier are connected through an Ethernet network cable and a synchronous cable;
the main controller transmits synchronous acquisition signals to adjacent bridge pier controllers through synchronous cables and receives data transmitted by the adjacent bridge pier controllers through Ethernet network cables;
the pier controller positioned on the pier of the pier receives the synchronous acquisition signal sent by the main controller through the synchronous cable, and sends the synchronous acquisition signal to the acquisition device connected with the pier controller and simultaneously sends the synchronous acquisition signal to the next-stage pier controller; each bridge pier controller positioned on the middle bridge pier receives a synchronous acquisition signal sent by the upper stage bridge pier controller through a synchronous cable, and sends the synchronous acquisition signal to the lower stage bridge pier controller while sending the synchronous acquisition signal to an acquisition device connected with the synchronous acquisition signal, so that data at two ends of the bridge are synchronously acquired; the bridge pier controller on the bridge pier at the bridge tail receives the synchronous acquisition signal sent by the upper stage of bridge pier controller through the synchronous cable and sends the synchronous acquisition signal to the acquisition device connected with the synchronous acquisition signal;
the pier controller that is located on the pier of bridge tail transmits the relevant roof beam data that collection system on its self place pier gathered for the upper pier controller, relevant roof beam data is: data of each beam between the bridge pier where the current bridge pier controller is located and the bridge pier where the previous stage bridge pier controller is located;
each bridge pier controller positioned on the middle bridge pier performs disease analysis according to the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned and the related beam data transmitted by the next-stage bridge pier controller to obtain the analysis result of each beam between the bridge pier where the bridge pier controller is positioned and the bridge pier where the next-stage bridge pier controller is positioned, and transmits the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned to the previous-stage bridge pier controller; if the damage is found according to the analysis result, transmitting the analysis result and data related to the damaged beam to the main controller in a first-stage manner through the upper-stage bridge pier controller;
the pier controller on the pier of the pier head performs disease analysis according to the related beam data acquired by the acquisition device on the pier where the pier controller is located and the related beam data transmitted by the next-stage pier controller to obtain the analysis result of each beam between the pier where the pier controller is located and the pier where the next-stage pier controller is located; if the diseases are found according to the analysis result, transmitting the analysis result and data related to the beams with the diseases to the main controller;
when a data uploading instruction of the main controller is received, each bridge pier controller transmits an analysis result and data related to the beam to the main controller;
and each acquisition device acquires corresponding data according to the acquisition signal and transmits the acquired data to a pier controller positioned on the same pier through an Ethernet network cable.
Preferably, the synchronization cable includes a pair of synchronization signal lines and a pair of RS485 communication lines.
Preferably, the data buffer area is arranged in the acquisition device, the pier controller and the main controller.
Preferably, each bridge pier is provided with a power supply device;
and the power supply device is used for supplying power to the pier controller and each acquisition device which are positioned on the same pier.
Preferably, the power supply device includes: solar panel and battery.
Preferably, the synchronous cable further comprises an energy transmission line for supplying power to the acquisition device.
The invention also provides a synchronous data acquisition method of the intelligent support with the pier as the center, which comprises the following steps:
the main controller transmits synchronous acquisition signals to adjacent bridge pier controllers through synchronous cables;
the pier controller positioned on the pier of the pier receives the synchronous acquisition signal sent by the main controller through the synchronous cable, and sends the synchronous acquisition signal to the acquisition device connected with the pier controller and simultaneously sends the synchronous acquisition signal to the next-stage pier controller; each bridge pier controller positioned on the middle bridge pier receives a synchronous acquisition signal sent by the upper stage bridge pier controller through a synchronous cable, and sends the synchronous acquisition signal to the lower stage bridge pier controller while sending the synchronous acquisition signal to an acquisition device connected with the synchronous acquisition signal, so that data at two ends of the bridge are synchronously acquired; the bridge pier controller on the bridge pier at the bridge tail receives the synchronous acquisition signal sent by the upper stage of bridge pier controller through the synchronous cable and sends the synchronous acquisition signal to the acquisition device connected with the synchronous acquisition signal;
the pier controller that is located on the pier of bridge tail transmits the relevant roof beam data that collection system on its self place pier gathered for the upper pier controller, relevant roof beam data is: data of each beam between the bridge pier where the current bridge pier controller is located and the bridge pier where the previous stage bridge pier controller is located;
each bridge pier controller positioned on the middle bridge pier performs disease analysis according to the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned and the related beam data transmitted by the next-stage bridge pier controller to obtain the analysis result of each beam between the bridge pier where the bridge pier controller is positioned and the bridge pier where the next-stage bridge pier controller is positioned, and transmits the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned to the previous-stage bridge pier controller; if the damage is found according to the analysis result, transmitting the analysis result and data related to the damaged beam to the main controller in a first-stage manner through the upper-stage bridge pier controller;
the pier controller on the pier of the pier head performs disease analysis according to the related beam data acquired by the acquisition device on the pier where the pier controller is located and the related beam data transmitted by the next-stage pier controller to obtain the analysis result of each beam between the pier where the pier controller is located and the pier where the next-stage pier controller is located; if the diseases are found according to the analysis result, transmitting the analysis result and data related to the beams with the diseases to the main controller;
when a data uploading instruction of the main controller is received, each bridge pier controller transmits an analysis result and data related to the beam to the main controller;
and the main controller receives data transmitted by the adjacent bridge pier controllers through the Ethernet network cable.
Preferably, before data acquisition, a pier controller is arranged on each pier, a plurality of acquisition devices are arranged on the pier supports, and the pier controllers and the acquisition devices on the same pier are connected through Ethernet network cables and synchronous cables;
the main controller and each bridge pier controller are sequentially connected through an Ethernet network cable and a synchronous cable, and two adjacent bridge pier controllers are connected through the Ethernet network cable and the synchronous cable.
Preferably, when the upper management device sends a request, the main controller may further send the original dynamic data and the analysis result of the specified time period to the upper management device.
As can be seen from the above, in the bridge pier-centered intelligent support synchronous data acquisition method and network system of the present invention, since each bridge pier is provided with a bridge pier controller for managing ethernet and a plurality of acquisition devices, a distributed bridge analysis system is formed, thereby solving the problems of synchronous acquisition, transmission and disease analysis of support data.
Drawings
Fig. 1 is a schematic structural diagram of a pier-centered intelligent support synchronous data acquisition network system according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart of a pier-centered synchronous data acquisition method for an intelligent support according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.
The embodiment provides an intelligent support synchronous data acquisition network system taking a bridge pier as a center. The intelligent support synchronous data acquisition network system taking a bridge pier as a center in the embodiment of the invention comprises: the system comprises a main controller, N pier controllers and M acquisition devices;
the N pier controllers are respectively arranged on the N piers; a plurality of acquisition devices are arranged on each pier; the acquisition devices are all arranged on the pier supports; wherein N and M are both natural numbers, and M is greater than N;
the main controller is connected with the N pier controllers in sequence;
the main controller is connected with the adjacent bridge pier controllers through Ethernet network cables and synchronous cables;
two adjacent bridge pier controllers are connected with each other through an Ethernet network cable and a synchronous cable;
the pier controller and the acquisition device which are positioned on the same pier are connected through an Ethernet network cable and a synchronous cable;
the main controller transmits synchronous acquisition signals to adjacent bridge pier controllers through synchronous cables and receives data transmitted by the adjacent bridge pier controllers through Ethernet network cables;
the pier controller positioned on the pier of the pier receives the synchronous acquisition signal sent by the main controller through the synchronous cable, and sends the synchronous acquisition signal to the acquisition device connected with the pier controller and simultaneously sends the synchronous acquisition signal to the next-stage pier controller; each bridge pier controller positioned on the middle bridge pier receives a synchronous acquisition signal sent by the upper stage bridge pier controller through a synchronous cable, and sends the synchronous acquisition signal to the lower stage bridge pier controller while sending the synchronous acquisition signal to an acquisition device connected with the synchronous acquisition signal, so that data at two ends of the bridge are synchronously acquired; the bridge pier controller on the bridge pier at the bridge tail receives the synchronous acquisition signal sent by the upper stage of bridge pier controller through the synchronous cable and sends the synchronous acquisition signal to the acquisition device connected with the synchronous acquisition signal;
the pier controller that is located on the pier of bridge tail transmits the relevant roof beam data that collection system on its self place pier gathered for the upper pier controller, relevant roof beam data is: data of each beam between the bridge pier where the current bridge pier controller is located and the bridge pier where the previous stage bridge pier controller is located;
each bridge pier controller positioned on the middle bridge pier performs disease analysis according to the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned and the related beam data transmitted by the next-stage bridge pier controller to obtain the analysis result of each beam between the bridge pier where the bridge pier controller is positioned and the bridge pier where the next-stage bridge pier controller is positioned, and transmits the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned to the previous-stage bridge pier controller; if the damage is found according to the analysis result, transmitting the analysis result and data related to the damaged beam to the main controller in a first-stage manner through the upper-stage bridge pier controller;
the pier controller on the pier of the pier head performs disease analysis according to the related beam data acquired by the acquisition device on the pier where the pier controller is located and the related beam data transmitted by the next-stage pier controller to obtain the analysis result of each beam between the pier where the pier controller is located and the pier where the next-stage pier controller is located; if the diseases are found according to the analysis result, transmitting the analysis result and data related to the beams with the diseases to the main controller;
when a data uploading instruction of the main controller is received, each bridge pier controller transmits an analysis result and data related to the beams to the main controller';
and each acquisition device acquires corresponding data according to the acquisition signal and transmits the acquired data to a pier controller positioned on the same pier through an Ethernet network cable.
In the technical scheme of the invention, because each pier is provided with a pier controller for managing the Ethernet and each pier is provided with a plurality of acquisition devices, a distributed bridge analysis system is formed, and the problems of synchronous acquisition, transmission and disease analysis of support data can be solved. In addition, because the acquisition device on every pier all transmits the data of gathering for the pier controller that is located same pier, and not direct transmission for main control unit, consequently each acquisition device's signal transmission distance is shorter to can reduce the transmission error of signal effectively, also can make entire system's circuit lay simpler moreover.
In addition, in the technical scheme of the invention, the specific values of the N and the M can be preset according to the requirements of actual application conditions. For example, if there are 3 piers to be provided with the pier controller and 4 acquisition devices are required to be provided on each pier, the values of N and M may be set to 3 and 12, respectively. Of course, in the technical solution of the present invention, the above N and M may also take other values, which are not described in detail herein.
In addition, there are various specific implementations of the technical solution of the present invention, and the technical solution of the present invention will be described in detail below by taking one of the specific implementations as an example.
The first embodiment,
For example, fig. 1 is a schematic structural diagram of an intelligent pier-centered synchronous data acquisition network system according to an embodiment of the present invention, as shown in fig. 1, in the embodiment, there are 3 piers 39, 40 and 41, and two beams are disposed between two adjacent piers. For example, beam 13 and beam 14 are disposed between piers 40 and 39, and beam 15 and beam 16 are disposed between piers 39 and 41. One pier controller, i.e., pier controllers 1, 7 and 8, is provided on each pier. In addition, each pier can be provided with a plurality of collecting devices, and each collecting device is arranged on the pier supports at two ends of the beam on the pier. For example, since the piers 40 and 41 are two piers located at the head and tail of the bridge, respectively, and the pier 39 is an intermediate pier, i.e., a pier located at the middle of the bridge, 4 acquisition devices 2, 3, 4, and 5 are provided on the pier 39, 2 acquisition devices 9 and 10 are provided on the pier 40, and 2 acquisition devices 11 and 12 are provided on the pier 41. Wherein, collection devices 2 and 9 are respectively arranged on the pier supports at two ends of the beam 13, collection devices 3 and 10 are respectively arranged on the pier supports at two ends of the beam 14, collection devices 4 and 11 are respectively arranged on the pier supports at two ends of the beam 15, and collection devices 5 and 12 are respectively arranged on the pier supports at two ends of the beam 16. Therefore, the relevant data of each beam can be acquired through the acquisition devices.
In addition, in the first embodiment, a bridge having 3 piers is taken as an example for explanation. In fact, the technical scheme of the invention is also suitable for a bridge with N (N >3) piers. In the technical scheme of the invention, for a bridge with N (N is more than or equal to 3) piers, 2 acquisition devices are respectively arranged on the first pier and the Nth pier, and 4 acquisition devices are respectively arranged on the other piers.
In addition, a main controller 38 is provided in this embodiment. The main controller 38, the pier controller 7, the pier controller 1, and the pier controller 8 are connected in this order. Since the pier controller 7 is closest to the main controller 38, the pier controller 7 is a pier controller adjacent to the main controller 38; as can be seen from the connection relationship shown in fig. 1, the pier controller 7 is a former stage pier controller of the pier controller 1 with respect to the pier controller 1 (because the pier controller 7 is adjacent to the pier controller 1 and the pier controller 7 is closer to the main controller 38 than the pier controller 1), and the pier controller 8 is a latter stage pier controller of the pier controller 1 (because the pier controller 7 is adjacent to the pier controller 8 and the pier controller 8 is farther from the main controller 38 than the pier controller 1). That is, for the current bridge pier controller, the bridge pier controller adjacent to the current bridge pier controller and closer to the main controller may be referred to as a previous bridge pier controller, and the bridge pier controller adjacent to the current bridge pier controller and farther from the main controller may be referred to as a next bridge pier controller.
Further, as shown in fig. 1, the pier controller 1 on the pier 39 is connected to the pier controller on the upper stage thereof (i.e., the pier controller 7 on the preceding pier 40) via an ethernet network line 26 and a synchronization cable 27, and is connected to the pier controller on the lower stage thereof (i.e., the pier controller 8 on the succeeding pier 41) via an ethernet network line 28 and a synchronization cable 29; the pier controller 7 adjacent to the main controller is connected to the main controller 38 through an ethernet network line 46 and a synchronization cable 47.
On each pier, the pier controller on the pier is connected with the acquisition device through an Ethernet network cable and a synchronous cable.
For example, at the bridge pier 39, the bridge pier controller 1 is connected to the acquisition device 2 via the ethernet network line 17 and the synchronization cable 18, connected to the acquisition device 3 via the ethernet network line 19 and the synchronization cable 20, connected to the acquisition device 4 via the ethernet network line 23 and the synchronization cable 24, and connected to the acquisition device 5 via the ethernet network line 21 and the synchronization cable 22.
For example, in the pier 40, the pier controller 7 is connected to the acquisition device 9 via the ethernet network line 32 and the synchronization cable 33, and is connected to the acquisition device 10 via the ethernet network line 30 and the synchronization cable 31.
For example, in the pier 41, the pier controller 8 is connected to the acquisition device 11 via the ethernet network line 34 and the synchronization cable 35, and is connected to the acquisition device 12 via the ethernet network line 36 and the synchronization cable 37.
Therefore, the main controller 38 may transmit the synchronous acquisition signal to the pier controllers 7, 1, and 8 through the synchronization cables 47, 27, and 29, and establish an information acquisition control device centering on the pier. After receiving the synchronous acquisition signals, the pier controllers 7, 1 and 8 can transmit acquisition signals to the acquisition devices connected with the pier controllers respectively through the synchronous cables according to the received synchronous acquisition signals. And each acquisition device acquires corresponding data according to the acquisition signal and transmits the acquired data to a pier controller positioned on the same pier through an Ethernet network cable. The pier controller on the pier at the bridge tail transmits the received related beam data (namely the data of each beam between the pier where the current pier controller is located and the pier where the previous pier controller is located) to the previous pier controller; and each bridge pier controller positioned on the middle bridge pier performs disease analysis according to the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned and the related beam data transmitted by the next-stage bridge pier controller to obtain the analysis result of each beam between the bridge pier where the bridge pier controller is positioned and the bridge pier where the next-stage bridge pier controller is positioned, and transmits the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned to the previous-stage bridge pier controller. And the pier controller (namely the pier controller connected with the main controller) positioned on the pier of the pier performs disease analysis according to the related beam data acquired by the acquisition device on the pier where the pier controller is positioned and the related beam data transmitted by the next-stage pier controller to obtain the analysis result of each beam between the pier where the pier controller is positioned and the pier where the next-stage pier controller is positioned.
In addition, when it is known from the analysis result that at least one girder is damaged, each pier controller transmits the analysis result of the damaged girder and data related to the damaged girder to the main controller.
Or, further, when receiving a data uploading instruction of the main controller, each pier controller may further transmit the analysis result and the data related to the beam to the main controller.
For example, the acquisition devices 11 and 12 may transmit the acquired data (i.e., the data of the beam on which the acquisition devices 11 and 12 are located) to the pier controller 8 through an ethernet network line; the pier controller 8 transmits the received related beam data (i.e., the data acquired by the acquisition devices 11 and 12) to the upper pier controller, i.e., the pier controller 1, through the ethernet network line 28; the relevant beam data is data (i.e., data acquired by the acquisition devices 11 and 12) of each beam between the pier (i.e., the pier 41) where the current pier controller (i.e., the pier controller 8) is located and the pier (i.e., the pier 39) where the previous pier controller (i.e., the pier controller 1) is located.
The pier controller 1 can also receive and buffer the data collected and transmitted by the collecting devices 2, 3, 4, 5, and therefore, the pier controller 1 can synchronously analyze the received data (for example, the data collected by the collecting devices 4 and 5 and the data collected by the collecting devices 11 and 12 transmitted by the pier controller 8) to obtain the analysis result of each beam between the pier (i.e., the pier 39) where the pier controller 1 is located and the pier (i.e., the pier 41) where the pier controller 8 is located (for example, the pier controller 1 can analyze the synchronous data collected by the collecting devices 4 and 11 to obtain the analysis result related to the beam 15, i.e., the current state of the beam 15), and can analyze the synchronous data collected by the collecting devices 5 and 12 to obtain the analysis result related to the beam 16, i.e., the current state of the girder 16), and then transmits the received relevant girder data (e.g., data collected by the collection devices 2 and 3) to the upper stage pier controller, i.e., the pier controller 7, through the ethernet network line 26.
Further, when it is known from the analysis result that at least one girder is damaged, the pier controller 1 transmits the analysis result of the damaged girder and data related to the damaged girder to the main controller 38 through the pier controller (i.e., the pier controller 7) of the previous stage.
Alternatively, further, when receiving a data upload instruction from the main controller, the pier controller 1 may transmit the analysis result and the data related to the beam to the main controller 38 through the pier controller of the previous stage (i.e., the pier controller 7).
Similarly, the pier controller 7 can also receive and buffer the data collected and transmitted by the collecting devices 9 and 10, so that the pier controller 7 can synchronously analyze the data (for example, the data collected by the collecting devices 9 and 10 and the data collected by the collecting devices 2 and 3 transmitted by the pier controller 1) to obtain the analysis result of each beam between the pier (i.e., the pier 40) where the pier controller 7 is located and the pier (i.e., the pier 39) where the pier controller 1 is located (for example, the pier controller 7 can analyze the synchronous data collected by the collecting devices 9 and 2 to obtain the analysis result related to the beam 13, i.e., the current state of the beam 13), and can also analyze the synchronous data collected by the collecting devices 10 and 3 to obtain the analysis result related to the beam 14, i.e., the current state of the beam 14).
Since the pier controller 7 is directly connected to the main controller 38 without a higher-level pier controller, when it is known from the analysis result that at least one of the girders is damaged, the pier controller 7 transmits the analysis result of the damaged girder and data related to the damaged girder to the main controller 38 through the ethernet network line 46.
Alternatively, when receiving a data upload instruction of the main controller, the pier controller 7 may also transmit the analysis result and the data related to the beam to the main controller.
By the data transmission mode, transmission of a large amount of data can be avoided, the transmission quantity of the data in the information channel is reduced, the data analysis pressure of the main controller or the upper management equipment is reduced, and the main controller can comprehensively process the synchronous data information of the plurality of beams to obtain the state information of the whole bridge.
In addition, in the first embodiment, a bridge having 3 piers is taken as an example for explanation. In the present embodiment, for a bridge having N (N >3) piers, the operations performed by the pier controllers on the first pier and the nth pier are the same as or similar to those performed by the pier controllers 7 and 8, and the operations performed by the pier controllers on the other intermediate piers are the same as or similar to those performed by the pier controller 1.
In addition, preferably, in an embodiment of the present invention, the performing the synchronous analysis to obtain the analysis result may include:
acquiring the horizontal dynamic mechanical state and the displacement state of the bridge when the vehicle passes through the bridge according to the received data to obtain the state information of the bridge;
and comparing and analyzing the state information of the bridge with the normal state model of the bridge in the bridge pier controller to obtain an analysis result.
In addition, preferably, in an embodiment of the present invention, the method may further include:
performing abnormity analysis according to data synchronously acquired by the acquisition devices at the two ends of each beam, and judging whether the bridge state has a disease or not according to an abnormity analysis result; if the beam is damaged, the analysis result of the damaged beam and data related to the damaged beam are reported to the main controller and sent to the upper management equipment by the main controller, so that early warning information can be reported in time, and the early warning function is realized.
In addition, preferably, in an embodiment of the present invention, when the upper management device issues a request, the main controller may further send the original dynamic data and the analysis result of the specified time period to the upper management device.
In addition, preferably, in an embodiment of the present invention, the synchronization cable includes a pair of synchronization signal lines and a pair of RS485 communication lines.
In the technical scheme of the invention, the main controller can send a control signal through the RS485 communication line to check whether the pier controller works normally, then can send an acquisition instruction including an acquisition rate and calibration time through the RS485 communication line, and finally sends a synchronous acquisition pulse signal through the synchronous signal line, so that the transmission speed is high, the accuracy is high, the synchronous requirement can be met, and the synchronous acquisition of the support information at two ends of the bridge can be realized.
In addition, in the technical scheme of the invention, the bridge pier controller can send the analysis result (such as a bridge abnormal data analysis report) and the original collected data to the main controller through the Ethernet cable, so that enough bandwidth can be ensured to transmit large-capacity data to the main controller, meanwhile, the condition that information sent by using WiFi is interfered by other signals is avoided, and the accuracy and the integrity of the sent information are ensured.
In addition, since there is network delay, it is preferable that a data buffer is provided in the acquisition device, the pier controller, and the main controller in an embodiment of the present invention. The acquisition device may convert the acquired analog signal into a digital signal and then place the digital signal into a data buffer, and then transmit the acquired data (e.g., the converted digital signal) to the pier controller when the network channel is available; then, the bridge pier controller may also store the received data in the data buffer area, and analyze and process the data in the data buffer area to obtain an analysis result. And when the condition that at least one beam is damaged is known according to the analysis result, each pier controller also transmits the analysis result of the damaged beam and data related to the damaged beam to the main controller. In addition, each pier controller can also transmit the analysis result and the data related to the beams to the main controller under the requirement of the upper management equipment.
In addition, in an embodiment of the present invention, the sending of the data to the master controller may preferably include: and data such as time node information, bridge abutment position ID, sampling rate, sampling data and the like are sampled, so that the problem at which position of the bridge is in question can be conveniently and directly known.
In addition, preferably, in an embodiment of the present invention, each pier is further provided with a power supply device; and the power supply device is used for supplying power to the pier controller and each acquisition device which are positioned on the same pier.
For example, as shown in fig. 1, a power supply device 6 is provided on a bridge pier 39, and the power supply device 6 is connected to the bridge pier controller 1 via a power supply line 25; the bridge pier 40 is provided with a power supply device 42, and the power supply device 42 is connected with the bridge pier controller 7 through a power supply line 44; the pier 41 is provided with a power supply device 43, and the power supply device 43 is connected to the pier controller 8 through a power supply line 45.
In addition, preferably, in an embodiment of the present invention, the synchronization cable may further include an energy transmission line for supplying power to the collecting device, in addition to the pair of synchronization signal lines and the pair of RS485 communication lines.
Therefore, through the power supply device, 24-hour uninterrupted power supply can be provided for the pier controller and each acquisition device.
In addition, preferably, in an embodiment of the present invention, the power supply device may include: solar panel and battery.
In addition, preferably, in an embodiment of the present invention, the power supply device may also be used to supply power to the acquisition device.
For example, assuming that the voltage used by each acquisition device is 3V and the supply voltage of the external power source is 24V, the supply device may transmit the 24V voltage to the acquisition devices through the bridge pier controller, and the 24V voltage is converted into the 3V voltage by each acquisition device, so that the acquisition devices may be supplied with the 3V stable voltage.
If the external power supply directly provides 3V voltage for the acquisition device, the voltage reached cannot reach 3V due to energy loss after the electric energy is transmitted to the acquisition device. Therefore, in the technical scheme of the invention, 24V direct current power distribution can be provided by an external power supply, and then the 24V voltage is converted into 3V voltage through the acquisition device, so that the loss of electric energy can be reduced compared with the direct transmission of the 3V voltage, and the stable voltage of 3V can be provided for the acquisition device after the voltage is reduced by the power supply device.
In addition, in the technical scheme of the invention, when the intelligent support synchronous data acquisition network system taking the bridge pier as the center is applied to different bridges, the intelligent support synchronous data acquisition network system can adapt to different bridge systems by increasing or reducing the number of bridge pier controllers, acquisition devices and power supply devices.
In addition, the technical scheme of the invention also provides an intelligent support synchronous data acquisition method taking the bridge pier as the center.
Fig. 2 is a schematic flow chart of a pier-centered synchronous data acquisition method for an intelligent support according to an embodiment of the present invention. As shown in fig. 2, the method for acquiring synchronous data of an intelligent support based on a pier in an embodiment of the present invention includes the following steps:
and step 21, the main controller transmits synchronous acquisition signals to the adjacent pier controllers through the synchronous cables.
each bridge pier controller positioned on the middle bridge pier performs disease analysis according to the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned and the related beam data transmitted by the next-stage bridge pier controller to obtain the analysis result of each beam between the bridge pier where the bridge pier controller is positioned and the bridge pier where the next-stage bridge pier controller is positioned, and transmits the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned to the previous-stage bridge pier controller; if the damage is found according to the analysis result, transmitting the analysis result and data related to the damaged beam to the main controller in a first-stage manner through the upper-stage bridge pier controller;
the pier controller on the pier of the pier head performs disease analysis according to the related beam data acquired by the acquisition device on the pier where the pier controller is located and the related beam data transmitted by the next-stage pier controller to obtain the analysis result of each beam between the pier where the pier controller is located and the pier where the next-stage pier controller is located; if the diseases are found according to the analysis result, transmitting the analysis result and data related to the beams with the diseases to the main controller;
when a data uploading instruction of the main controller is received, each bridge pier controller can also transmit the analysis result and the data related to the beams to the main controller.
And 24, receiving the data transmitted by the adjacent bridge pier controllers by the main controller through the Ethernet network cable.
In addition, in an embodiment of the present invention, the method for acquiring synchronous data of an intelligent support centered on a pier may further include:
before data acquisition, arranging a pier controller on each pier, arranging a plurality of acquisition devices on a pier support, and connecting the pier controllers and the acquisition devices on the same pier through Ethernet network cables and synchronous cables;
the main controller and each bridge pier controller are sequentially connected through an Ethernet network cable and a synchronous cable, and two adjacent bridge pier controllers are connected through the Ethernet network cable and the synchronous cable.
In addition, in an embodiment of the present invention, the method for acquiring synchronous data of an intelligent support based on a bridge pier may further include:
each bridge pier controller carries out abnormal analysis according to data synchronously acquired by the acquisition devices at the two ends of each beam and judges whether the bridge state has diseases or not according to the abnormal analysis result; if the disease occurs, the abnormal analysis result and the data synchronously acquired by each acquisition device are reported to the main controller, and the data are sent to the upper management equipment by the main controller, so that early warning information can be reported in time, and the early warning function is realized.
In addition, preferably, in an embodiment of the present invention, when an abnormal condition occurs or the upper management device issues a request, the main controller may further send the original dynamic data and the analysis result in the specified time period to the upper management device.
In summary, in the method and system for acquiring synchronous data of an intelligent support based on bridge piers, a bridge pier controller is arranged on each bridge pier to manage the ethernet, and a plurality of acquisition devices are arranged on each bridge pier, so that a distributed bridge analysis system is formed, and the problems of synchronous acquisition, transmission and disease analysis of support data can be solved.
In addition, in the bridge monitoring process, the bridge pier controller can perform front-end intelligent processing, can further screen bridge diseases, and can send the original dynamic data of a specified time period and an analysis result to an upper management device under the condition of abnormal conditions or requirements of the upper management device, so that timely early warning information report can be realized, meanwhile, the transmission quantity of the data in an information channel is reduced, the load of the overall analysis of the upper management device is also reduced, and intelligent bridge management can be realized.
In addition, in the technical scheme of the invention, each acquisition device is connected with the pier controller and the main controller by only one synchronous cable and one Ethernet network cable, and the synchronous cables between the acquisition devices and the pier controllers can be used for supplying power and synchronous signals at the same time. At this moment, the pier controller actually plays the roles of a repeater and a concentrator, so that the circuit is simpler and the wiring is more convenient. In addition, because the synchronous signal is the synchronous acquisition pulse signal which is sent after the accurate timing through the synchronous cable, the transmission speed is fast and the accuracy is high. In addition, because the bridge information is transmitted among the acquisition device, the pier controller and the main controller through the Ethernet network cable, the condition that the bridge information is interfered by other signals through WiFi transmission is avoided, the accuracy of data transmission is improved, and meanwhile, large-capacity acquisition data can be transmitted. In addition, the main controller and the bridge pier controllers are used for building a cascade network through the Ethernet network cable, so that the method is simple and feasible, the system has good expandability, physical structural separation is realized, and the logical structure is compact.
In addition, in the technical scheme of the invention, the acquisition device is arranged on the pier support, the size is small, the measurement distance is short, the analog signal can be converted into a digital signal, and the data transmission speed is high, so that the anti-interference capability of the acquisition device is enhanced, and the measurement error is reduced; meanwhile, the acquisition devices on the pier supports at the two ends of one beam can acquire data synchronously, so that data analysis of the beam can be realized according to the synchronously acquired data.
In addition, in the technical scheme of the invention, the power supply system is uniformly managed by taking the bridge pier as a unit, and the power supply device consisting of the solar panel and the storage battery can supply power for the bridge pier controller and the acquisition device continuously for 24 hours; and 24V supply voltage can obtain 3V stable voltage after being reduced by the acquisition device, and meanwhile, the transmission distance is short and the energy loss is low.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The utility model provides an use synchronous data acquisition network system of wisdom support of pier as center which characterized in that, this system includes: the system comprises a main controller, N pier controllers and M acquisition devices;
the N pier controllers are respectively arranged on the N piers; a plurality of acquisition devices are arranged on each pier; the acquisition devices are all arranged on the pier supports; wherein N and M are both natural numbers, and M is greater than N;
the main controller is connected with the N pier controllers in sequence;
the main controller is connected with the adjacent bridge pier controllers through Ethernet network cables and synchronous cables;
two adjacent bridge pier controllers are connected with each other through an Ethernet network cable and a synchronous cable;
the pier controller and the acquisition device which are positioned on the same pier are connected through an Ethernet network cable and a synchronous cable;
the main controller transmits synchronous acquisition signals to adjacent bridge pier controllers through synchronous cables and receives data transmitted by the adjacent bridge pier controllers through Ethernet network cables;
the pier controller positioned on the pier of the pier receives the synchronous acquisition signal sent by the main controller through the synchronous cable, and sends the synchronous acquisition signal to the acquisition device connected with the pier controller and simultaneously sends the synchronous acquisition signal to the next-stage pier controller; each bridge pier controller positioned on the middle bridge pier receives a synchronous acquisition signal sent by the upper stage bridge pier controller through a synchronous cable, and sends the synchronous acquisition signal to the lower stage bridge pier controller while sending the synchronous acquisition signal to an acquisition device connected with the synchronous acquisition signal, so that data at two ends of the bridge are synchronously acquired; the bridge pier controller on the bridge pier at the bridge tail receives the synchronous acquisition signal sent by the upper stage of bridge pier controller through the synchronous cable and sends the synchronous acquisition signal to the acquisition device connected with the synchronous acquisition signal;
the pier controller that is located on the pier of bridge tail transmits the relevant roof beam data that collection system on its self place pier gathered for the upper pier controller, relevant roof beam data is: data of each beam between the bridge pier where the current bridge pier controller is located and the bridge pier where the previous stage bridge pier controller is located;
each bridge pier controller positioned on the middle bridge pier performs disease analysis according to the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned and the related beam data transmitted by the next-stage bridge pier controller to obtain the analysis result of each beam between the bridge pier where the bridge pier controller is positioned and the bridge pier where the next-stage bridge pier controller is positioned, and transmits the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned to the previous-stage bridge pier controller; if the damage is found according to the analysis result, transmitting the analysis result and data related to the damaged beam to the main controller in a first-stage manner through the upper-stage bridge pier controller;
the pier controller on the pier of the pier head performs disease analysis according to the related beam data acquired by the acquisition device on the pier where the pier controller is located and the related beam data transmitted by the next-stage pier controller to obtain the analysis result of each beam between the pier where the pier controller is located and the pier where the next-stage pier controller is located; if the diseases are found according to the analysis result, transmitting the analysis result and data related to the beams with the diseases to the main controller;
when a data uploading instruction of the main controller is received, each bridge pier controller transmits an analysis result and data related to the beam to the main controller;
and each acquisition device acquires corresponding data according to the acquisition signal and transmits the acquired data to a pier controller positioned on the same pier through an Ethernet network cable.
2. The system of claim 1, wherein:
the synchronization cable includes a pair of synchronization signal lines and a pair of RS485 communication lines.
3. The system of claim 1, wherein:
and data buffer areas are arranged in the acquisition device, the pier controller and the main controller.
4. The system of claim 1, wherein:
each pier is provided with a power supply device;
and the power supply device is used for supplying power to the pier controller and each acquisition device which are positioned on the same pier.
5. The system of claim 4,
the power supply device includes: solar panel and battery.
6. The system of claim 1, wherein:
the synchronous cable also comprises an energy transmission line for supplying power to the acquisition device.
7. A synchronous data acquisition method of an intelligent support taking a bridge pier as a center is characterized by comprising the following steps:
the main controller transmits synchronous acquisition signals to adjacent bridge pier controllers through synchronous cables;
the pier controller positioned on the pier of the pier receives the synchronous acquisition signal sent by the main controller through the synchronous cable, and sends the synchronous acquisition signal to the acquisition device connected with the pier controller and simultaneously sends the synchronous acquisition signal to the next-stage pier controller; each bridge pier controller positioned on the middle bridge pier receives a synchronous acquisition signal sent by the upper stage bridge pier controller through a synchronous cable, and sends the synchronous acquisition signal to the lower stage bridge pier controller while sending the synchronous acquisition signal to an acquisition device connected with the synchronous acquisition signal, so that data at two ends of the bridge are synchronously acquired; the bridge pier controller on the bridge pier at the bridge tail receives the synchronous acquisition signal sent by the upper stage of bridge pier controller through the synchronous cable and sends the synchronous acquisition signal to the acquisition device connected with the synchronous acquisition signal;
the pier controller that is located on the pier of bridge tail transmits the relevant roof beam data that collection system on its self place pier gathered for the upper pier controller, relevant roof beam data is: data of each beam between the bridge pier where the current bridge pier controller is located and the bridge pier where the previous stage bridge pier controller is located;
each bridge pier controller positioned on the middle bridge pier performs disease analysis according to the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned and the related beam data transmitted by the next-stage bridge pier controller to obtain the analysis result of each beam between the bridge pier where the bridge pier controller is positioned and the bridge pier where the next-stage bridge pier controller is positioned, and transmits the related beam data acquired by the acquisition device on the bridge pier where the bridge pier controller is positioned to the previous-stage bridge pier controller; if the damage is found according to the analysis result, transmitting the analysis result and data related to the damaged beam to the main controller in a first-stage manner through the upper-stage bridge pier controller;
the pier controller on the pier of the pier head performs disease analysis according to the related beam data acquired by the acquisition device on the pier where the pier controller is located and the related beam data transmitted by the next-stage pier controller to obtain the analysis result of each beam between the pier where the pier controller is located and the pier where the next-stage pier controller is located; if the diseases are found according to the analysis result, transmitting the analysis result and data related to the beams with the diseases to the main controller;
when a data uploading instruction of the main controller is received, each bridge pier controller transmits an analysis result and data related to the beam to the main controller;
and the main controller receives data transmitted by the adjacent bridge pier controllers through the Ethernet network cable.
8. The method of claim 7, further comprising:
before data acquisition, arranging a pier controller on each pier, arranging a plurality of acquisition devices on a pier support, and connecting the pier controllers and the acquisition devices on the same pier through Ethernet network cables and synchronous cables;
the main controller and each bridge pier controller are sequentially connected through an Ethernet network cable and a synchronous cable, and two adjacent bridge pier controllers are connected through the Ethernet network cable and the synchronous cable.
9. The method of claim 7, wherein:
when the upper management equipment sends a demand, the main controller also sends the original dynamic data and the analysis result of the appointed time period to the upper management equipment.
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