CN-122009277-A - Distributed turnout monitoring system and method

CN122009277ACN 122009277 ACN122009277 ACN 122009277ACN-122009277-A

Abstract

The invention discloses a turnout monitoring system and a turnout monitoring method, wherein the system comprises a plurality of sensing nodes which are arranged at different monitoring positions of a turnout and are used for collecting turnout state data and storing data with time stamps, the plurality of sensing nodes comprise a main node and at least one auxiliary node, the main node comprises a time service unit and a synchronization unit, standard time is obtained through the time service unit, time synchronization is carried out between the main node and the at least one auxiliary node through the synchronization unit, so that the data collected by all the sensing nodes have aligned time stamps, an analysis host is in communication connection with the sensing nodes, receives and stores the data collected by the sensing nodes, carries out fusion processing on the data from different sensing nodes based on the aligned time stamps, and analyzes the whole state of the turnout. Compared with the prior art, the method and the device realize switch system level state diagnosis by combining distributed deployment and accurate time synchronization of the main node and the auxiliary node and multi-node data fusion analysis, and reduce the on-site deployment workload and equipment cost.

Inventors

MA SAI
CHEN WEIMING
HUANG ANQUAN
WANG SEN
WANG LIANGJIE
TANG LIANHAI
CUI SONG

Assignees

通号通信信息集团上海有限公司

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (10)

1. A distributed switch monitoring system, comprising: The sensing nodes are arranged at different monitoring positions of the turnout and are used for collecting turnout state data and storing data with time stamps; The plurality of sensing nodes comprise a main node and at least one auxiliary node, wherein the main node comprises a time service unit and a synchronization unit, the main node acquires standard time through the time service unit and performs time synchronization with the at least one auxiliary node through the synchronization unit so that data acquired by all sensing nodes have aligned time stamps; the analysis host is in communication connection with the plurality of sensing nodes and is used for receiving and storing the data acquired by the plurality of sensing nodes, carrying out fusion processing on the data from different sensing nodes based on the aligned time stamps, and analyzing the whole state of the turnout.
2. The distributed switch monitoring system of claim 1 wherein said primary node and said secondary node each comprise a control unit, a storage unit, an acquisition unit and sensor, a communication unit, a power management unit, and a built-in battery; the master node further comprises a time service unit.
3. A distributed switch monitoring system according to claim 2, wherein the synchronization unit of the primary node is configured to time synchronize with the synchronization unit of the secondary node via bluetooth low energy BLE; The master node is used for distributing independent connection event time slots to each auxiliary node, and each auxiliary node is used for aligning the time slot anchor points distributed by the master node so as to realize clock synchronization based on the master node.
4. The distributed switch monitoring system of claim 1 wherein said analysis host comprises: The data receiving module is used for receiving turnout state data uploaded by the sensing nodes; The calibration module is used for converting the original sensor data uploaded by the sensing node into standard physical quantity data by utilizing pre-recorded reference data; The fusion analysis module is used for carrying out correlation analysis on turnout state data from different sensing nodes based on the aligned time stamps to generate turnout state diagnosis results; The correlation analysis comprises the step of comparing the conversion force curve, the locking force curve or the displacement curve of different monitoring position sensing nodes in the turnout conversion process, and judging whether the turnout state is abnormal or not.
5. The distributed switch monitoring system of claim 1, wherein the sensing node further comprises a sensor interface disposed on a housing of the sensing node, having a uniform physical specification, for detachably connecting an external sensor, and wherein the sensing node is connected to the external sensor by a wireless cable; The external sensor comprises a displacement sensor, an acceleration sensor, a laser sensor and a stress sensor and is used for monitoring turnout state data comprising turnout close, open stroke, vibration, crawling, conversion force, locking force or locking quantity.
6. The distributed switch monitoring system of claim 1 further comprising a retrieval terminal in communication with said analysis host for providing a management interface to a user for configuring operational parameters of said sensing nodes, querying and displaying switch status data and analysis results.
7. A switch monitoring method based on the distributed switch monitoring system of any one of claims 1-6, comprising: Installing a plurality of sensing nodes at different monitoring positions of the turnout according to the monitoring requirements, wherein the sensing nodes comprise a main node and at least one auxiliary node, and configuring a corresponding sensor for each sensing node; The master node acquires standard time from the time service unit at regular time and performs time synchronization with all the auxiliary nodes through the synchronization unit; The sensing node collects sensor data in a high-frequency collection mode when the turnout is switched or the turnout passes, and collects static sensor data in a set period in a static period, and all the collected data are stored after being provided with time stamps; after the monitoring is finished, transmitting the data acquired by all the sensing nodes to an analysis host; The analysis host receives and stores the data of all the sensing nodes, performs fusion processing on the data from different sensing nodes based on the aligned time stamps, and analyzes the whole state of the turnout; and the retrieval terminal is connected with the analysis host computer and retrieves turnout monitoring data and state information.
8. The switch monitoring method as in claim 7, wherein said time synchronization specifically comprises: The main node distributes independent connection event time slots for each auxiliary node through a BLE communication protocol; each secondary node aligns with a time slot anchor point distributed by the main node so as to realize accurate synchronization of all sensing nodes based on the clock of the main node.
9. The switch monitoring method as in claim 7, wherein the fusion process specifically comprises: converting the original sensor data uploaded by the sensing node into standard physical quantity data by utilizing pre-recorded reference data; Based on the aligned time stamps, carrying out correlation analysis on turnout state data from different sensing nodes to generate turnout state diagnosis results; The correlation analysis comprises the step of comparing the conversion force curve, the locking force curve or the displacement curve of different monitoring position sensing nodes in the turnout conversion process, and judging whether the turnout state is abnormal or not.
10. The switch monitoring method according to claim 9, wherein the reference data specifically includes: after the sensing node is installed, the close-fitting value, the open-range value and all sensor data of each monitoring position during the positioning and the reverse positioning of a group of turnouts are recorded and used for calibrating the data acquired subsequently.

Description

Distributed turnout monitoring system and method Technical Field The invention relates to the technical field of turnout monitoring, in particular to a distributed turnout monitoring system and method. Background The turnout is used as a railway key infrastructure and is used for guiding a train to drive to different track lines and realizing switching of driving paths. At present, the switch management department has realized monitoring parameters such as switch machine conversion current, conversion power and switch indication notch, can effectively guide the daily maintenance of the switch, and reduces the on-site working time of operation and maintenance personnel. In order to fully analyze the running state of the turnout, more turnout state parameters such as close, open, vibration, frame, conversion force, locking amount, creeping and the like need to be further monitored. Through retrieval, chinese patent publication No. CN115257854A discloses a distributed turnout close contact detection system and a detection method, the scheme is that a plurality of detection nodes are arranged at each traction point of a turnout, each node is provided with a displacement sensor and an acceleration sensor, the nodes collect data at regular time and judge turnout passing or switching events, the displacement and acceleration values are continuously collected at high frequency after the event triggering, the data uploading is realized through a gateway and a server, and the server obtains the close contact amount and opening amount information of each traction point according to the node data. Meanwhile, the data analysis is mainly aimed at counting the close-fitting quantity and opening quantity of a single node, and the fusion association analysis of the data of a plurality of traction points sensing nodes is lacking, so that state anomalies such as conversion synchronism, force crosstalk and the like among all traction points of the turnout cannot be effectively judged. Chinese patent publication No. CN112550369a discloses an on-line switch state monitoring system, which realizes the parameter monitoring of switch close-contact quantity, opening quantity, creeping quantity and frame, but the equipment has large volume, high power, needs external cable power supply, has large installation workload beside the track, and can only be used for monitoring single switch. Chinese patent publication No. CN117125112a discloses a wireless sensing acquisition device and an acquisition method for detecting turnouts, which reduce the volume and power consumption of the device, adopt battery power supply, use solar panels as supplementary energy, adopt wireless transmission data between the devices, reduce the installation workload, and can be repeatedly used for measuring a plurality of groups of turnouts, but the sensors and the acquisition devices are still connected by cables. Therefore, how to realize flexible distributed deployment of monitoring nodes and ensure time consistency of data collected by each node while ensuring low-power consumption long-term operation of the switch monitoring nodes so as to comprehensively analyze the state of the switch is a technical problem to be solved. Disclosure of Invention The present invention is directed to a distributed switch monitoring system and method that overcomes the above-described deficiencies of the prior art. The aim of the invention can be achieved by the following technical scheme: according to a first aspect of the present invention there is provided a distributed switch monitoring system comprising: The sensing nodes are arranged at different monitoring positions of the turnout and are used for collecting turnout state data and storing data with time stamps; The plurality of sensing nodes comprise a main node and at least one auxiliary node, wherein the main node comprises a time service unit and a synchronization unit, the main node acquires standard time through the time service unit and performs time synchronization with the at least one auxiliary node through the synchronization unit so that data acquired by all sensing nodes have aligned time stamps; the analysis host is in communication connection with the plurality of sensing nodes and is used for receiving and storing the data acquired by the plurality of sensing nodes, carrying out fusion processing on the data from different sensing nodes based on the aligned time stamps, and analyzing the whole state of the turnout. As an optimal technical scheme, the main node and the auxiliary node comprise a control unit, a storage unit, an acquisition unit, a sensor, a communication unit, a power management unit and a built-in battery; the master node further comprises a time service unit. As an preferable technical solution, the synchronization unit of the master node is configured to perform time synchronization with the synchronization unit of the slave node through bluetooth low energy BLE; The master node is use