Intelligent measuring system for contact network compensation device

Abstract

The invention discloses an intelligent measurement system for a contact network compensation device, relates to the technical field of electrified railway contact network monitoring, and aims to solve the problems of high labor cost, high safety risk, low data acquisition efficiency and high maintenance cost in the existing contact network compensation device monitoring mode. The system comprises a measuring node, a receiving terminal and an upper computer analysis module, the measuring node is installed on the lower portion of a balance weight of the contact network compensation device and collects and stores the value of the distance b between the balance weight and the ground and environment temperature data. The receiving terminal is carried by a worker, moves along with the inspection vehicle or the added train, awakens the measuring node and receives data; the upper computer analysis module processes and visually displays the data, and alarms the abnormal state of the compensation device at the same time; the system does not need to lay a power supply and a communication line on site, is convenient to install and maintain, is high in severe environment resistance, can greatly reduce the frequency of manual on-road operation, improves the monitoring efficiency and the driving safety, and has a higher popularization value.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of monitoring of electrified railway catenary, in particular to an intelligent measurement system for catenary compensation device. BACKGROUND

[0002] In the operation process of electrified railway, the consistent stability of catenary elasticity is a key factor to determine whether the railway can adapt to different levels of operating speed, and the catenary tension directly determines the size and stability of the catenary suspension elasticity. The core function of the catenary compensation device is to maintain the constant tension and stable elasticity of the catenary under various working conditions of temperature change, so the state monitoring and parameter measurement of the device are one of the core work of the operation and maintenance of the catenary equipment.

[0003] At present, the control of the catenary compensation device by the railway system mainly relies on manual inspection, which specifically includes periodic manual on-site observation of equipment status, measurement of operating parameters according to fixed cycle, periodic driving inspection of compensation efficiency, and increase of on-site inspection frequency under extreme temperature conditions. Some units try to use network real-time online monitoring scheme, but this scheme has significant defects: on the one hand, it needs to lay additional power supply lines and communication transmission lines on site, which is greatly limited by the installation environment and is difficult to be widely deployed along the complex railway; on the other hand, it has high one-time installation cost, and needs to continuously bear network communication fees and equipment maintenance costs in the later period, which is poor in economy and does not have conditions for large-scale promotion.

[0004] The manual inspection method also has many problems: first, the workers face high personal safety risks during the work; second, the time window for operation is limited, and usually in a 180-minute time window, a single work group can only complete the inspection of compensation devices on a single 10-kilometer line, and if all compensation devices in a work area are to be detected, a large amount of time window resources will be occupied, which seriously affects the progress of other equipment maintenance tasks; third, in extreme weather such as high temperature and low temperature freezing, workers are prone to heatstroke, slipping and other safety accidents when working on site; fourth, temporary time windows applied in special circumstances will interfere with normal train operation order, reduce railway transportation efficiency, and affect passenger travel experience.

[0005] The existing monitoring technology has problems such as low data collection efficiency, lagging analysis, and weak anti-interference ability, and cannot reflect the dynamic operation state of the catenary compensation device in real time and accurately, which is difficult to meet the needs of efficient and safe operation of electrified railway. Therefore, an intelligent measurement system for catenary compensation device is needed, which is easy to install, low in cost, high in safety, and can realize efficient data collection and analysis, to solve the problems of the existing technology. SUMMARY

[0006] In order to achieve the above object, the application adopts the following technical scheme: an intelligent measurement system of a catenary compensation device, comprising a measurement node, a receiving terminal and an upper computer analysis module; the measurement node is installed at the lower part of a plummet of the catenary compensation device, used for collecting the distance b value of the plummet from the ground and environmental temperature data, and storing the collected data for at least 24 hours; the receiving terminal is carried by a staff, and can move along the railway line with an inspection vehicle or an additional train, and when entering the communication range of the measurement node, the measurement node is woken up and the stored data is received; the upper computer analysis module is in communication connection with the receiving terminal, used for processing, analyzing and visually displaying the received data, and alarming the abnormal state of the compensation device.

[0007] Further, the measurement node comprises an ultrasonic ranging unit, a temperature collecting unit, a data storage unit, a wireless communication unit, a low-power control unit and a power supply unit; the ultrasonic ranging unit is used for measuring the distance b value of the plummet from the ground, the temperature collecting unit is used for collecting the environmental temperature, the data storage unit meets the data storage requirement for at least 24 hours, the wireless communication unit is used for data transmission with the receiving terminal, and the low-power control unit is used for controlling the measurement node to enter the sleep state in the non-collection period and enter the working state under the triggering of the wake-up signal of the receiving terminal; the measurement node can set different measurement time intervals according to different requirements, and the device itself does not emit light, and the indicator light does not affect the driving safety.

[0008] Further, the receiving terminal comprises a wireless receiving unit, a data temporary storage unit, a display unit and a control unit; the wireless receiving unit is used for receiving the data sent by the measurement node, the display unit is used for displaying the data receiving information and state information in real time, and the control unit is used for switching the working mode of the receiving terminal; the staff carries the receiving terminal to ride the additional train to pass through each measurement node in turn, receives the data through the wireless communication technology, and checks the relevant receiving information and state information on the device display.

[0009] Further, the upper computer analysis module comprises a data import unit, a data processing unit, a visual display unit, an abnormal diagnosis unit and an alarm unit; the data import unit is used for reading the data in the receiving terminal, the visual display unit can automatically generate relevant data graphics and reports, and intuitively display the dynamic change process of each catenary compensation device and the relationship between the dynamic change and the current environmental temperature, the abnormal diagnosis unit analyzes the stuck and abnormal plummet through the algorithm, and the alarm unit pops up an alarm and displays the position and pole number information.

[0010] Further, the system can stably work at-30℃~+60℃, can normally work in the rain, snow, freezing and gale weather environment, and can resist the electromagnetic and electrostatic anti-interference requirements in the electrified railway environment; the device is migrated according to the change of the field position and is disassembled and maintained on site.

[0011] Further, each of the measurement nodes has an independent device number, and the device number can correspond to the number of the overhead line compensation device support; the intelligent monitoring system can distinguish between uplink and downlink on the running line, and the receiving terminal displays uplink data and downlink data separately during the receiving process.

[0012] Further, the power supply unit of the measurement node adopts a low-power design, and supports 24-hour uninterrupted operation of the device; the wireless communication unit adopts an encrypted communication mode.

[0013] Further, when the receiving terminal enters the communication range of the measurement node, the measurement node is woken up and uploads the measurement data in the last 24 hours, and after the uploading is completed, the node enters the sleep state again.

[0014] Further, the data graphics generated by the host computer analysis module include a b value-time change curve, a temperature-time change curve and a b value-temperature correlation curve, and the report includes the collection time, b value, temperature and data state information of each measurement node.

[0015] Further, the measurement node reflects the running state of the overhead line compensation device in a period of time by measuring the b value of the plummet distance from the ground and the ambient temperature; the staff does not need to inspect each measurement node on site, and can complete data collection by carrying the receiving terminal and riding the train through each measurement node.

[0016] Advantages Compared with the prior art, the advantages of the present application are as follows: 1. The measurement node of the present application adopts a low-power design and a sleep-wakeup mechanism, combined with a hardware configuration resistant to harsh environments, including a wide-temperature-range working assembly, a high-protection-grade shell and a fall-prevention fixing structure, and is matched with a mobile wake-up data receiving mode of the receiving terminal, so that the system can run stably in complex environments such as high and low temperatures, rain, snow, wind and strong electromagnetic interference along the railway line without additional laying of power supply and communication lines, effectively avoiding the dependence of traditional networked monitoring schemes on on-site wiring and the operation risk of manual inspection in extreme weather, and ensuring the continuity and safety of data collection.

[0017] 2. The data processing, multi-dimensional visual display such as the correlation curve of b value and temperature and intelligent abnormal diagnosis function integrated by the host computer analysis module of the present application, combined with the time series data stored by the measurement node and the classification receiving mechanism of the receiving terminal, enable the staff to intuitively master the dynamic running trend of the overhead line compensation device without on-site checking of the device state one by one, quickly locate possible problems such as jamming or compensation failure, effectively solve the problems of scattered data records and analysis lag in traditional manual inspection, and improve the accuracy of device state evaluation and fault warning.

[0018] 3、The application realizes the traceability of compensation device state information and the collaborative management of multiple terminals by constructing a complete closed loop from data acquisition and transmission to analysis, effectively avoiding the problems of number confusion and data omission in manual recording, reducing the frequency of work personnel's on-site operation, reducing the occupation of skylight resources, and ensuring the efficient cooperation of railway transportation and equipment maintenance.

[0019] 4、The application can flexibly adapt to the inspection needs of different scenes such as main line and side line through the modular design of each component of the system, such as replaceable battery of the measurement node, multi-interface adaptation of the receiving terminal, permission hierarchical management of the host computer, and convenient disassembly and parameter remote configuration function of the equipment, which facilitates migration and maintenance according to the change of the field position, effectively avoids the poor adaptability and high maintenance cost of traditional monitoring equipment caused by fixed installation mode, and improves the promotion applicability and long-term operation economy of the system in the railway network. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 : The measurement node installation structure in the embodiment of the present application; Figure 2 : The appearance structure of the receiving terminal in the embodiment of the present application; Figure 3 : The system work flow in the embodiment of the present application; Figure 4 : The data visualization interface of the host computer analysis module in the embodiment of the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] The application discloses an intelligent measurement system of a catenary compensation device, and aims to solve the problems of high labor cost, great safety risk, low data collection efficiency and high maintenance cost in the existing catenary compensation device monitoring mode, and the specific implementation mode is as follows: the selection, connection and working process of each component are designed according to the core design principle of meeting the actual operation requirements of the railway site and guaranteeing the stability and safety of the equipment.

[0024] Embodiment one: intelligent measurement application of catenary compensation device on the main line of the Gongyi section of the Longhai line The main line of the Gongyi section of the Longhai line is a busy electrified railway trunk line, and more than 80 passenger and freight trains pass through the line every day. The catenary compensation device of the line is in a long-term high-load operation state, and is affected by the large temperature difference between four seasons in the Central Plains, i.e. -15 DEG C to 38 DEG C, and the sandstorm weather in spring and autumn. The traditional manual inspection has the problems of limited operation time, low data collection efficiency and high safety risk in extreme weather. In order to improve the timeliness and safety of the catenary compensation device monitoring of the section, the intelligent measurement system of the catenary compensation device is adopted to realize the dynamic monitoring of 30 groups of catenary compensation devices.

[0025] Measurement node deployment: Installation position: 30 groups of catenary compensation devices under the plummet of the upline of the K623+000 to K633+000 section of the Gongyi section of the Longhai line, corresponding to the pillar numbers TEX-1-00001 to TEX-1-00030, 1 measurement node is installed on the surface of each plummet through a double fixing structure of "magnet adsorption + screw reinforcement", and the ultrasonic ranging unit of the measurement node is vertically downward, and there is no shielding object to interfere with the ranging accuracy.

[0026] Parameter configuration: the measurement time interval of the measurement node is set to 1 hour, the distance b value of the plummet from the ground and the environmental temperature data are synchronously acquired in single collection, the data storage capacity is configured to be 16GB, the continuous 72-hour data cycle storage requirement is met, the wireless communication unit adopts a 433MHz railway special frequency band, the transmission power is set to 12dBm, the communication distance is ensured to be not less than 500m in the moving state of the train, and the sleep wake-up threshold of the low-power control unit is set, and the sleep current is controlled to be within 8muA.

[0027] Configuration of the receiving terminal: 2 receiving terminals are configured, the model is JST-2020A, and the 2 receiving terminals are carried by 2 power supply inspection personnel respectively, the built-in 5000mAh lithium battery of the terminal supports continuous 8-hour inspection work in the full power state, the terminal is pre-set with the line parameters of the "Gongyi section of the Longhai line uplink", the data classification display function is started, the uplink data is marked with blue, the original data received in the recent 30 days is stored, and the USB Type-C interface data export is supported.

[0028] Host computer analysis module deployment: Install the host computer analysis module, software version: CWM-3.0, on the industrial computer in the Luoyang power supply section monitoring room "Configuration: Intel Core i7 processor, 16GB memory, 1TB solid state disk", establish a wireless communication connection with the receiving terminal through the local area network, and use SQL Server 2019 as the database. The data is automatically backed up to the local server and cloud storage every day. The module has a preset Longhai Railway Gongyi Section OCS compensation device b value normal change threshold. When the temperature changes by 10°C, the b value changes in the range of 0.35-0.65m. The abnormal diagnosis algorithm uses "threshold judgment + 8-hour continuous change" double-determination logic.

[0029] Data acquisition and processing process: Data acquisition execution: Conduct 2 data collection operations on the 10th and 25th of each month. The inspection personnel carry the receiving terminal and take the train of Luoyang Railway Administration of Zhengzhou Railway Administration Group Company, depart from Luoyang Station at 8:00, and travel along the Longhai Railway to Zhengzhou Station at a speed of 40-60km / h. When the train enters the communication range of about 1000m of the measurement node, the receiving terminal automatically transmits an encrypted wake-up signal. The dynamic key is updated every 24 hours. After the measurement node is woken up, it uploads the b value and temperature data in the last 24 hours through the wireless communication unit. After the upload is completed, it immediately returns to the sleep state. The receiving terminal displays the data reception status in real time, such as "Node TEX-1-00005 data received, b value: 2.35m, temperature: 18.2°C, reception success". If the reception fails, a pop-up window will prompt "Node TEX-1-00012 data reception timeout, please adjust the train speed and retry"; Data import and processing: After the train arrives at Zhengzhou Station, the inspection personnel import the data of the receiving terminal into the host computer analysis module through the USB Type-C interface. The data import unit automatically checks the data integrity. If there is 1 piece of format error data, i.e. missing collection time, it will be marked and manually supplemented. The data processing unit uses the moving average method to eliminate 3 groups of abnormal b values caused by electromagnetic interference, such as instantaneous jump to 5.0m. At the same time, the association database of b value and temperature of each measurement node is established, and the corresponding data pairing table is generated; Visual display and anomaly diagnosis: The host computer analysis module automatically generates the b value-time variation curve, temperature-time variation curve and b value-temperature correlation curve of 30 measurement nodes. The measurement node data with number TEX-1-00012 shows that during the process of temperature rising from 12℃ to 26℃ within "12 hours", the b value only changes from 2.40m to 2.45m with a change of 0.05m, which is far below the normal threshold of 0.49-0.91m. The anomaly diagnosis unit determines that the compensation device corresponding to the node has the risk of jamming, and the alarm unit immediately pops up the window to display the abnormal information: "Abnormal measurement node number: TEX-1-00012, location: Longhai line K628+500, pole number: TEX-1-00012, abnormal type: compensation device jamming, current b value: 2.45m, temperature: 26℃", and at the same time, the in-station message is pushed to the mobile terminal of the contact net maintenance workshop responsible person of Luoyang power supply section; Application effect verification: Efficiency improvement: After using the system, the data collection time of 30 groups of compensation devices on the Gongyi section of the Longhai line is shortened from 8 hours of traditional manual inspection to 2.5 hours without occupying the sky window, and the data collection efficiency is improved by 68.75%. At the same time, the frequency of manual on-line operation is reduced from 4 times per month to 2 times per month, and the annual labor cost is saved by about 86,000 yuan; Timeliness of abnormal treatment: For the jamming anomaly of TEX-1-00012 node, the maintenance personnel complete fault diagnosis within 24 hours after receiving the alarm information, find that the compensation device pulley shaft lubrication fails, and restore normal after timely replacing the lubricating grease, avoiding the bow net accident caused by compensation failure; Environmental adaptability verification: The system has been continuously running on the Gongyi section for 12 months, and has experienced low temperature of-12℃, high temperature of 37℃ and 6-level wind and dust weather. The measurement accuracy of the measurement node is maintained within ±3mm, the communication success rate is 99.2%, the battery power consumption meets the design expectation, and a single replacement supports 12 months of operation, meeting the operation requirements in complex environment of electrified railway; Example two: Intelligent measurement application of contact net compensation device on side line of Guanlin station Guanlin station is an important freight hub of Zhengzhou Railway Administration Group Company. The contact net compensation devices on side line No. II and No. 4 in the station have large vibration due to frequent train starting and stopping and freight loading and unloading operation. Traditional manual inspection needs to be performed once a month by walking along the side line, which has problems of dispersed operation range and easy data recording error. After using the system, efficient monitoring of 15 groups of side line compensation devices in the station is realized, and the labor intensity of inspection personnel is reduced; System deployment scheme: Measurement node deployment: Install measurement nodes under the 15 sets of catenary compensation devices on the II and 4 lines of Guanlin Station. The equipment numbers are GL-2-00001 to GL-2-00015. The measurement time interval is set to 2 hours to adapt to the gap between train flows. The power supply unit uses a 19000mAh lithium sulfonyl chloride battery, which supports continuous operation for 18 months. The fixed structure uses reinforced bolts to cope with the vibration environment of the sidings. Configuration of receiving terminal and host computer: The receiving terminal is turned on in "walking inspection mode" to reduce the frequency of wake-up signal transmission to once every 30 seconds to adapt to the walking speed of personnel. The host computer analysis module is connected to the local monitoring terminal of the Guanlin Station power supply workshop to support on-site viewing of data reports and curves. Data collection and abnormality handling: Data collection: On the 5th of each month, one inspector carries a receiving terminal to walk along the II and 4 lines of Guanlin Station. Within 2 hours, the inspector completes data reception for 15 measurement nodes. The terminal displays "GL-2-00008 node b value has remained 1.80m for 48 hours, temperature change 5℃, data anomaly".

[0030] Abnormality handling: After confirming the abnormality through the host computer analysis module, the inspector immediately checks the site and finds that the compensation device plummet is stuck in the bracket. After manual reset, it returns to normal, avoiding abnormal catenary tension due to compensation failure.

[0031] Application effect: After using the system, the number of inspection personnel for the compensation device on the sidings of Guanlin Station has decreased from 2 to 1, and the inspection time has been shortened from 4 hours to 2 hours, saving about 32,000 yuan in labor costs annually. The accuracy of data recording has improved from 92% for manual recording to 100%, and no equipment failure has occurred due to data omission.

[0032] Example Three: Emergency measurement in extreme weather In December of a certain year, Henan experienced heavy snow weather, with temperatures dropping to -8℃. Some catenary compensation devices on the railway lines were frozen. Traditional manual inspection could not be carried out normally due to slippery roads and low visibility, so the system was used for emergency monitoring to check the risk of compensation device freezing and sticking.

[0033] System deployment and data collection: Measurement node status confirmation: Through the host computer analysis module, the working status of the 25 measurement nodes from "K690+000 to K700+000" on the Luoyang-Yanshi section is remotely viewed. All nodes respond normally, and the communication signal strength is ≥-70dBm, with no hardware failure caused by low temperature freezing.

[0034] Emergency data collection: The inspection personnel carried the receiving terminal and rode the emergency train, with a speed of 30 km / h, along the up and down lines of Luoyang-Yanshi section. The receiving terminal successfully woke up all 25 measurement nodes and obtained the data of the last 24 hours. During this period, due to snowfall, the communication signal of some nodes was weakened, and the terminal automatically extended the receiving timeout time from 30 seconds to 60 seconds to ensure the completeness of data reception.

[0035] Abnormal diagnosis and disposal: The upper computer analysis module showed that only one node "LY-3-00018" had a transient error in b value measurement due to icing on the plummet surface, with a jump from 2.10 m to 2.30 m. The data processing unit automatically removed this abnormal value without triggering a false alarm. The data of the remaining 24 nodes was normal, and it was determined that there was no risk of freezing and jamming of the compensation device on this section, and there was no need to arrange manual on-line maintenance, avoiding safety hazards in extreme weather operations.

[0036] Application value: This emergency monitoring completed the status check of 25 groups of compensation devices on the Luoyang-Yanshi section in only 3 hours, which was 75% more efficient than the traditional manual inspection which was expected to take 12 hours. At the same time, it avoided 8 maintenance personnel from working on the line in snowy weather, eliminating safety risks such as slipping and frostbite, and ensuring the safety of railway transportation and personnel.

[0037] Table I The above Table I is a comparison of the three embodiments, which verifies the practicality, economy and safety of the system from the perspective of actual application. Its value not only lies in the efficiency improvement in a single scenario, but also lies in providing a standardized solution for monitoring of compensation devices of electrified railway overhead contact system: the system does not need to lay power supply and communication lines, and is convenient to install and maintain, such as "magnet + screw" double fixation of measurement nodes, supporting migration and disassembly, adapting to different scenarios such as main line, side line and hub, and having hardware foundation and technical conditions for large-scale promotion in national railway network; From the long-term operation data, the annual average maintenance cost of a single node of the system is less than 1 / 5 of the traditional networked monitoring solution, and it can reduce the window occupancy and ensure the efficiency of railway transportation, providing a new path of "low cost, high efficiency and high safety" for railway power supply departments. Through real-time data visualization and automatic abnormal alarm, the system changes the monitoring of compensation devices from "after-maintenance" to "early-warning", such as the jamming problem in the Kaishi section and the stuck fault in the Guanlin station, which are found and disposed in the early stage, effectively reducing the safety risk of train operation caused by overhead contact system failure, and assisting the upgrade of electrified railway operation safety.

[0038] The above front, back, left, right, up and down are relative to theFigure 1 For reference, according to the standard of the human observation perspective, the side of the device facing the observer is defined as front, the left side of the observer is defined as left, and the like.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0040] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An intelligent measurement system for a contact wire compensation device, characterized in that, The system includes a measurement node, a receiving terminal, and a host computer analysis module. The measurement node is installed under the weight of the overhead contact line compensation device to collect data on the distance b between the weight and the ground and the ambient temperature, and stores at least 24 hours of collected data. The receiving terminal is carried by staff and can move along the railway line with an inspection vehicle or train. When it enters the communication range of the measurement node, it wakes up the measurement node and receives the stored data. The host computer analysis module is communicatively connected to the receiving terminal and is used to process, analyze, and visualize the received data, and to issue alarms for abnormal states of the compensation device.

2. The intelligent measurement system for a contact wire compensation device according to claim 1, characterized in that, The measurement node includes an ultrasonic ranging unit, a temperature acquisition unit, a data storage unit, a wireless communication unit, a low-power control unit, and a power supply unit. The ultrasonic ranging unit measures the distance b of the weight off the ground. The temperature acquisition unit collects ambient temperature data. The data storage unit provides at least 24 hours of data storage. The wireless communication unit transmits data with the receiving terminal. The low-power control unit controls the measurement node to enter a sleep state during non-collection periods and enters a working state triggered by a wake-up signal from the receiving terminal. The measurement node can be set with different measurement time intervals according to different needs, and the device itself does not emit light, eliminating indicator lights that could affect driving safety.

3. The intelligent measurement system for a contact wire compensation device according to claim 1, characterized in that, The receiving terminal includes a wireless receiving unit, a data storage unit, a display unit, and a control unit. The wireless receiving unit is used to receive data sent by the measurement nodes, the display unit is used to display data reception information and status information in real time, and the control unit is used to switch the working mode of the receiving terminal. Staff members carry the receiving terminal on a train and pass through each measurement node in sequence, receive data through wireless communication technology, and view relevant reception information and status information on the device display.

4. The intelligent measurement system for a contact wire compensation device according to claim 1, characterized in that, The host computer analysis module includes a data import unit, a data processing unit, a visualization unit, an anomaly diagnosis unit, and an alarm unit. The data import unit is used to read data from the receiving terminal. The visualization unit can automatically generate relevant data graphics and reports to intuitively display the dynamic change process of each contact network compensation device and the relationship between the dynamic change and the current ambient temperature. The anomaly diagnosis unit analyzes the stuck and abnormal weights through algorithms. The alarm unit pops up an alarm and displays the location and pole number information.

5. The intelligent measurement system for a contact wire compensation device according to claim 1, characterized in that, The system can operate stably at temperatures ranging from -30℃ to +60℃ and can function normally in rain, snow, freezing, and windy weather conditions. It can also withstand electromagnetic and electrostatic interference requirements in the environment of electrified railways. The equipment can be relocated and disassembled and maintained on-site according to changes in the location.

6. The intelligent measurement system for a contact wire compensation device according to claim 1, characterized in that, Each of the aforementioned measurement nodes has a unique device number, which can correspond to the number of the contact network compensation device support pillar; the intelligent monitoring system can distinguish between the uplink and downlink of the operating line, and the receiving terminal displays the uplink and downlink data separately during the receiving process.

7. The intelligent measurement system for a contact wire compensation device according to claim 2, characterized in that, The power supply unit of the measurement node adopts a low-power design, supporting 24-hour uninterrupted operation of the device; the wireless communication unit adopts an encrypted communication method.

8. The intelligent measurement system for a contact wire compensation device according to claim 1, characterized in that, When the receiving terminal enters the communication range of the measurement node, the measurement node is awakened and uploads the measurement data of the most recent 24 hours. After the upload is completed, the node enters sleep mode again.

9. The intelligent measurement system for a contact wire compensation device according to claim 4, characterized in that, The data graphs generated by the host computer analysis module include b-value-time variation curves, temperature-time variation curves, and b-value-temperature correlation curves. The reports include the acquisition time, b-value, temperature, and data status information of each measurement node.

10. The intelligent measurement system for a contact wire compensation device according to claim 1, characterized in that, The measurement nodes reflect the operating status of the overhead contact line compensation device over a recent period by measuring the distance b between the weight and the ground and the ambient temperature. Staff do not need to inspect each node on-site; they can collect data by carrying a receiving terminal and passing through each measurement node in sequence on a train.

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