Multi-mode intelligent identification and confirmation platform system for turnout stateTechnical Field
The invention relates to the field of switch state management and control, in particular to a switch state multi-mode intelligent recognition and confirmation platform system.
Background
The turnout device is used as a signal base device and has the function of guiding the train to pass through different directions through the action conversion of positioning and reversing under the cooperation of other signal devices, so that the train can drive into a specified path. The inconsistent switch states and approaches have directly affected the efficiency and safety of railway transportation. Investigation has been made that the Paris train collision accident and route cause cancel in Europe 1988, the improper failure of the switch is related; the major railway accident of the gulf 429 of Chinese is related to the false indication of the location of the switch No. 12 on site.
It can be seen that errors in any one of the states of the switch or inconsistencies resulting from detection failures may cause the train to derail, collide, drive into the wrong direction, leading to serious accidents.
The switch action circuit is used for driving the switch in the traditional switch equipment, the switch indication circuit is used for indicating the switch state, the system structure and the restriction relation of the relay circuits are easily damaged by nonstandard maintenance actions, the structure is complex, the construction and the implementation are inconvenient, and the relay circuits are restricted by unreliable factors, so that the system requirements of high safety and reliability are difficult to adapt to and are difficult to be applied to new generation train control system scenes. Among the current switch state monitoring products are switch monitoring products or patents such as switch machine notch monitoring and monitoring based on image technology. The switch machine notch monitoring patents are used for indirectly deducing the information of the switch state by collecting the information of the action parts in the switch machine when collecting the information of the switch state, and the final result is easily influenced by intermediate links and cannot achieve high safety; the prior patent based on the image technology only can detect whether the turnout is in a positioning or reverse position state or not, and cannot judge whether the turnout is completely and accurately positioned or reverse position, namely, whether a gap exceeding more than millimeter exists between a movable switch rail and a fixed stock rail or not, when the gap is arranged, the turnout is also judged to be in a four-way state, and the derailment accident easily occurs when a train passes through the turnout. The patent based on image technology can therefore only be used to assist in determining the switch state.
Disclosure of Invention
In order to solve the defects, the invention provides a switch state multi-mode intelligent recognition and confirmation platform system; based on the method of direct detection of the recognition technology under the multiple modes, the turnout state is directly detected, and whether the turnout state is logically consistent with the approach state or not is judged.
The invention realizes the following steps of constructing a switch state multi-mode intelligent recognition and confirmation platform system, which is characterized in that:
the system comprises a main control board capable of realizing audio monitoring service, image monitoring service, closing detection service and data service, and is characterized in that:
The system also includes a microphone a deployed in the switch machine and a microphone B deployed at the switch for sound monitoring,
The system also includes three sets of switching value sensors;
The system also comprises binocular cameras which are arranged on symmetrical high points at two ends of the turnout;
the system also comprises a pressure sensor and a data acquisition board;
The output ends of the microphone A and the microphone B are connected with a data acquisition board, the data acquisition board is connected with a main control board, and the output of the binocular camera is connected with the main control board.
The invention relates to a switch state multimode intelligent recognition and confirmation platform system, which is characterized in that:
The main control board is a main control platform realized by an embedded board card based on linux, and is responsible for fusing data from an acquisition end and providing turnout state information after logic operation, so that consistency judgment of a route and a turnout is completed;
The data acquisition board is connected with the sensor and is responsible for collecting and integrating information acquired by the sensor and driving the sensor; meanwhile, the acquisition end is in data communication with the main control platform, the sensor layer directly collects relevant information of the turnout state, and the information is called by the main control end and driven by the acquisition end;
the main control platform completes the core functions of switch state monitoring and entrance switch consistency judgment by an audio monitoring service, an image monitoring service, a closing detection service and a data service together at a system level; the specific implementation is as follows;
(1) Audio monitoring: the audio monitoring service uses one microphone arranged in the switch machine and one microphone arranged at the switch point to monitor the sound of the internal action of the switch machine and the sound of the external switch point; normally, when a large abnormal sound is received, the sound is recorded and compared with the audio library in the current turnout state and the abnormal state, and finally the abnormal state is recorded in a log and a warning signal is output. When two groups of switching value sensors detect that a train passes, audio information is not analyzed temporarily so as to avoid interference, and abnormal sound detection is started after the train completely passes through the turnout; when an approach driving turnout switching command or a manual turnout switching command is sent out, triggering a switching action sequence monitoring function of an audio sensor, preparing to receive regular audio when turnout switching, comparing the regular audio with a sample library after turnout switching is finished, and judging whether turnout switching and locking are successfully executed;
(2) Image status monitoring service: the binocular cameras are respectively arranged on symmetrical high points at two ends of the turnout and are used for observing the turnout condition and the corresponding track state. In a normal state, executing abnormal detection, finding out abnormal images, or recording images to execute a foreign matter identification program when an alarm signal in an audio monitoring service is received, and reporting and uploading abnormal images to enter an abnormal processing flow if foreign matters exist; when a switch switching command is received, the switch performs positioning/inversion check before and after switching, the shot picture is processed and then subjected to edge detection and communication detection, the switch state is judged through the image processing process, if the positioning/inversion state and the pressure when the corresponding switch rail is closely attached to the stock rail are normal, the positioning/inversion state of the switch at the moment can be indicated, and if the positioning/inversion state and the pressure are different, the abnormality is indicated. When receiving a request for checking real-time monitoring, calling out a real-time turnout video from an upper computer;
(3) And (3) switch closure monitoring: the turnout closing monitoring service consists of two groups of pressure sensors, and pressure information between a turnout switch rail and a stock rail is continuously detected in a normal state to judge whether the turnout switch rail and the stock rail are closely attached or not, and the pressure information is also used for other monitoring services to call; when the switch is switched after the switch command is driven by the approach or the switch command is manually operated, the pressure state information of the switch rail and the stock rail is required to be actively output to confirm whether the switch rail is closely attached to the stock rail before and after the switch switching process;
(4) Data service: after data acquisition is completed, information and logs reflecting the turnout state are fed back to a server for storage, so that the turnout state can be conveniently called at any time and fed back upwards.
The invention has the following advantages: the invention provides a switch state multi-mode intelligent recognition and confirmation platform system; based on the method of direct detection of the recognition technology under the multiple modes, the turnout state is directly detected, and whether the turnout state is logically consistent with the approach state or not is judged. The platform system of the invention is composed of a main control layer, an acquisition layer and a plurality of sensors deployed at turnouts. The main control end usually selects an embedded board card based on linux, deploys software and algorithm, and is responsible for fusing data from the acquisition end and providing switch state information after logic operation, so that consistency judgment of the approach and the switch is completed. The acquisition end is connected with the sensor and is responsible for collecting and integrating information acquired by the sensor and driving the sensor. The sensor layer directly collects relevant information of the turnout state, and is called by the main control end and driven by the acquisition end.
The invention has the following advantages and beneficial effects:
(1) The monitoring process is uninterrupted, so that the system can master the state of the turnout in real time, and the state repair information of related parts of the turnout can be mastered; when the switch state is switched, the monitoring device has self-starting work.
(2) The sensor is adopted to directly detect the turnout state characteristics, and the uncertainty of intermediate links is eliminated, so that the real and reliable representation logic of turnout states output by the system is ensured, and the turnout state can be directly used in an interlocking system control flow and can be assisted to confirm on the basis of a relay circuit;
(3) A logic flow is established by adopting a multi-sensor information fusion technology, and finally, decision operation output results are fused, so that the requirement of high reliability of output is met, and particularly, the problem that the accuracy of detecting the millimeter-level four-switch state of a turnout cannot be met by a turnout state monitoring patent of a simple image scheme is solved.
(4) The platform is built based on an intelligent platform and technology, is independent to form a module, can generate interfaces with a path inlet end and a control end, and is beneficial to the structural design of a next-generation train control system.
Drawings
FIG. 1 is a block diagram of the architecture of the system of the present invention;
Fig. 2-3 are schematic flow diagrams of the platform system of the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 3, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a switch state multi-mode intelligent recognition and confirmation platform system by improving the system, which comprises a main control board 1 capable of realizing audio monitoring service, image monitoring service, closing detection service and data service, a microphone A2 arranged in a switch machine and a microphone B3 arranged at a switch of the switch for sound monitoring,
The system also comprises three groups of switching value sensors 4, 5 and 9;
The system also comprises binocular cameras 6 which are arranged on symmetrical high points at the two ends of the turnout;
The system also comprises a pressure sensor 7 and a data acquisition board 8;
The output ends of the microphone A2 and the microphone B3 are connected with the data acquisition board 8, the data acquisition board 8 is connected with the main control board 1, and the output of the binocular camera 6 is connected with the main control board 1.
In the switch state multi-mode intelligent recognition and confirmation platform system,
The main control board 1 is a main control platform realized by an embedded board card based on linux, and is responsible for fusing data from an acquisition end and providing turnout state information after logic operation, so that consistency judgment of a route and a turnout is completed;
The data acquisition board 8 is connected with the sensor and is responsible for collecting and integrating information acquired by the sensor and driving the sensor; meanwhile, the acquisition end is in data communication with the main control platform, the sensor layer directly collects relevant information of the turnout state, and the information is called by the main control end and driven by the acquisition end;
the main control platform completes the core functions of switch state monitoring and entrance switch consistency judgment by an audio monitoring service, an image monitoring service, a closing detection service and a data service together at a system level; the specific implementation is as follows;
(1) Audio monitoring: the audio monitoring service uses one microphone arranged in the switch machine and one microphone arranged at the switch point to monitor the sound of the internal action of the switch machine and the sound of the external switch point; normally, when a large abnormal sound is received, the sound is recorded and compared with the audio library in the current turnout state and the abnormal state, and finally the abnormal state is recorded in a log and a warning signal is output. When two groups of switching value sensors detect that a train passes, audio information is not analyzed temporarily so as to avoid interference, and abnormal sound detection is started after the train completely passes through the turnout; when an approach driving turnout switching command or a manual turnout switching command is sent out, triggering a switching action sequence monitoring function of an audio sensor, preparing to receive regular audio when turnout switching, comparing the regular audio with a sample library after turnout switching is finished, and judging whether turnout switching and locking are successfully executed;
(2) Image status monitoring service: the binocular cameras are respectively arranged on symmetrical high points at two ends of the turnout and are used for observing the turnout condition and the corresponding track state. In a normal state, executing abnormal detection, finding out abnormal images, or recording images to execute a foreign matter identification program when an alarm signal in an audio monitoring service is received, and reporting and uploading abnormal images to enter an abnormal processing flow if foreign matters exist; when a switch switching command is received, the switch performs positioning/inversion check before and after switching, the shot picture is processed and then subjected to edge detection and communication detection, the switch state is judged through the image processing process, if the positioning/inversion state and the pressure when the corresponding switch rail is closely attached to the stock rail are normal, the positioning/inversion state of the switch at the moment can be indicated, and if the positioning/inversion state and the pressure are different, the abnormality is indicated. When receiving a request for checking real-time monitoring, calling out a real-time turnout video from an upper computer;
(3) And (3) switch closure monitoring: the turnout closing monitoring service consists of two groups of pressure sensors, and pressure information between a turnout switch rail and a stock rail is continuously detected in a normal state to judge whether the turnout switch rail and the stock rail are closely attached or not, and the pressure information is also used for other monitoring services to call; when the switch is switched after the switch command is driven by the approach or the switch command is manually operated, the pressure state information of the switch rail and the stock rail is required to be actively output to confirm whether the switch rail is closely attached to the stock rail before and after the switch switching process;
(4) Data service: after the data acquisition is completed, the information and the log reflecting the turnout state are fed back to the server for storage, so that the turnout state can be conveniently called at any time and fed back upwards
The hardware structure and function distribution of the platform of the invention are as shown in figure 1, and the platform is composed of a main control layer, an acquisition layer and a plurality of sensors deployed at turnouts. The main control end usually selects an embedded board card based on linux, deploys software and algorithm, and is responsible for fusing data from the acquisition end and providing switch state information after logic operation, so that consistency judgment of the approach and the switch is completed. The acquisition end is connected with the sensor and is responsible for collecting and integrating information acquired by the sensor and driving the sensor. The sensor layer directly collects relevant information of the turnout state, and is called by the main control end and driven by the acquisition end.
The invention has the following advantages and beneficial effects:
(1) The monitoring process is uninterrupted, so that the system can master the state of the turnout in real time;
(2) The sensor is adopted to directly detect the state characteristics of the turnout, and the uncertainty of the intermediate link is eliminated, so that the true and reliable representation link of the turnout state is ensured;
(3) A logic flow is established by adopting a multi-sensor information fusion technology, and a result is finally obtained by fusion decision operation, so that the requirement of high reliability of output is met, and particularly, the problem that the accuracy of detecting the millimeter-level four-switch state of the turnout cannot be met by a patent for monitoring the turnout state by a simple image scheme is solved.
(4) The platform is built based on an intelligent platform and technology, is independent to form a module, can generate interfaces with a path inlet end and a control end, and is beneficial to the construction of next generation train control systems.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.