System and method for controlling quality of ultraviolet curing repaired pipeline based on RFID (Radio Frequency Identification Device)

Abstract

The invention relates to an RFID (Radio Frequency Identification Device)-based ultraviolet curing pipeline repairing quality control system and method, a plurality of RFID tags are arranged on a hose to be modified, the RFID tags are connected with a temperature sensor and a pressure sensor, an RFID reader corresponding to the RFID tags is arranged on a repairing operation site, and the RFID reader is connected with the temperature sensor and the pressure sensor. The RFID reader is connected with the data processing and control system in a wireless communication mode, and the data processing and control system is used for receiving data from the RFID reader, analyzing and processing the data and adjusting ultraviolet irradiation intensity and compressed air pressure curing parameters according to a set control strategy. According to the invention, the RFID is arranged on the hose material, so that the temperature and pressure in the curing process are monitored in real time, the temperature and pressure parameters in the ultraviolet curing repair process can be accurately monitored in real time, and the curing process is adjusted and controlled according to the monitored data, so that the repair quality is improved, and the repair efficiency is improved. And it is ensured that the repaired pipeline has good performance and durability.

Description

Technical Field

[0001] This invention relates to the field of pipeline repair technology, specifically to a quality control system and method for ultraviolet curing repair of pipelines based on RFID (Radio Frequency Identification) technology, which is particularly suitable for quality control during the ultraviolet curing repair process of underground pipelines. Background Technology

[0002] With the continuous development of urban infrastructure, the aging and damage of underground pipelines have become increasingly prominent. Ultraviolet (UV) curing repair technology, as an efficient and environmentally friendly trenchless pipeline repair method, has been widely used in recent years. This technology involves inserting a felted hose impregnated with photosensitive resin into the pipeline to be repaired, injecting compressed air to make it adhere tightly to the inner wall of the pipeline, and then using UV light to cure the resin inside the pipeline, forming a new high-strength resin-lined pipe.

[0003] However, existing UV-curing repair processes are subject to numerous factors that affect repair quality. For example, temperature and pressure control during curing are crucial. Excessive temperature can cause the resin to cure too quickly, generating internal stress and affecting the strength and durability of the inner liner. Insufficient temperature, on the other hand, leads to incomplete curing and reduced repair effectiveness. Inappropriate pressure can also result in poor adhesion between the hose and the pipe wall, affecting the post-repair seal. Currently, there is a lack of effective real-time monitoring and precise control methods to ensure the entire curing process is conducted under optimal conditions, making it difficult to guarantee the stability and reliability of repair quality.

[0004] Among the currently published patent documents, Chinese invention patent application 202211017159.5 discloses a method for intelligent ultraviolet curing CIPP tubing based on RFID technology. This method primarily focuses on curing pressure and only considers the effect of pressure on the resin, neglecting the impact of pressure on the fit between the liner and the original pipe, as well as the influence of temperature on the pipe repair quality. However, for quality control of ultraviolet curing repair technology, both temperature and pressure are significant influencing factors. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a quality control system and method for ultraviolet curing repair of pipelines based on RFID. By arranging RFID on the hose material, the temperature and pressure during the curing process can be monitored in real time. The temperature and pressure parameters during the ultraviolet curing repair process can be monitored in real time and accurately, and the curing process can be adjusted and controlled according to the monitoring data to improve the repair quality and ensure that the repaired pipeline has good performance and durability.

[0006] The technical solution to the above-mentioned technical problems is: an RFID-based ultraviolet light curing repair pipeline quality control system, characterized in that it includes: RFID tags: Multiple RFID tags are placed on the tubing material used for UV curing repair. These RFID tags are connected to temperature and pressure sensors to collect temperature and pressure data at their location in real time. RFID Reader: An RFID reader corresponding to the RFID tag is set up at the repair site to read the temperature and pressure data sent by the RFID tag, as well as the tag's own identification information. The RFID reader is connected to the subsequent data processing and control system via wireless communication. Data processing and control system: This system receives data from RFID readers, analyzes and processes the data. On the one hand, it displays the temperature and pressure values ​​collected by each RFID tag in real time, as well as the corresponding location information. On the other hand, it judges and controls the curing process according to the preset temperature and pressure standard range. When the monitored data exceeds the standard range, the system automatically issues an alarm and adjusts the ultraviolet light irradiation intensity and compressed air pressure curing parameters according to the set control strategy. Ultraviolet irradiation equipment: including ultraviolet lamps and related drive and control devices, which can adjust the intensity and duration of ultraviolet irradiation according to the instructions of the data processing and control system, so as to control the curing speed and degree of the resin and ensure that the temperature during the curing process is within a suitable range; Compressed air supply and control equipment: responsible for supplying compressed air into the hose, causing the hose to expand and fit tightly against the inner wall of the pipe. At the same time, it can precisely adjust the pressure of the compressed air according to the instructions of the data processing and control system to meet the curing requirements at different stages and ensure that the contact pressure between the hose and the inner wall of the pipe is stable within a suitable range.

[0007] Furthermore, four RFID tags are placed on the hose material every 0.8 to 1.3 meters, with the four RFID tags located at the top, bottom, and sides of the hose, respectively.

[0008] Furthermore, the RFID tag uses a polyimide flexible substrate.

[0009] Furthermore, the temperature sensor and pressure sensor are selected from MEMS micro-components, with an operating temperature range of -20℃ to 150℃ and a pressure range of 0 to 10MPa.

[0010] Another technical solution of the present invention is: a quality control method for ultraviolet curing repair of pipelines based on RFID, which applies the above-mentioned control system and includes: Preparation phase: Before pulling the resin-impregnated hose into the pipe to be repaired, the hose with RFID tags is initialized to ensure that all RFID tags are working properly and their identification information and corresponding location information are entered into the data processing and control system. At the same time, the ultraviolet irradiation equipment, compressed air supply and control equipment are debugged to ensure that they are in normal working condition. According to the material, pipe diameter and resin characteristics of the pipe to be repaired, the appropriate temperature and pressure standard range is preset in the data processing and control system. Repair process monitoring: After the hose is pulled into the pipe and inflated to fit tightly against the inner wall of the pipe, the ultraviolet light irradiation equipment is activated to start the curing process. At this time, the RFID tag placed on the hose collects the temperature and pressure data at its location in real time and sends this data to the RFID reader via wireless signal. After receiving the data, the RFID reader immediately transmits it to the data processing and control system. The data processing and control system analyzes and processes the received data in real time and dynamically displays the temperature and pressure change curves at each location on the monitoring interface, as well as the comparison with the preset standard range. Anomaly Handling and Control: During the curing process, if the data processing and control system detects that the temperature or pressure at a certain location exceeds the preset standard range, the system will immediately issue an alarm to remind the operator. At the same time, it will automatically adjust the relevant equipment according to the preset control strategy.

[0011] Furthermore, it also includes data recording and analysis: throughout the entire UV curing repair process, the data processing and control system records the temperature and pressure data collected by all RFID tags and saves the relevant equipment operating parameters and control operation records. After the repair is completed, these data can be further analyzed to evaluate the stability and reliability of the repair quality, providing reference and optimization basis for subsequent similar projects.

[0012] By adopting the above technical solution, the present invention has the following beneficial effects: 1. Real-time and accurate monitoring: By deploying multiple RFID tags on the hose material, temperature and pressure data at different locations during the curing process can be obtained in real time and accurately, providing a comprehensive understanding of the curing status. Compared with traditional single-point or limited-point monitoring methods, this greatly improves the accuracy and comprehensiveness of monitoring.

[0013] 2. Improve repair quality: Based on real-time monitored temperature and pressure data, the data processing and control system can adjust the curing parameters in a timely manner to ensure that the entire curing process is carried out under optimal conditions. This effectively avoids curing defects caused by improper temperature and pressure, such as incomplete resin curing or excessive internal stress, thereby significantly improving repair quality and extending the service life of the repaired pipeline.

[0014] 3. Automated control: The system has automated anomaly handling and control functions. When abnormal temperature or pressure is detected, it can automatically issue an alarm and adjust relevant equipment parameters, reducing manual intervention and improving work efficiency and the timeliness and reliability of quality control.

[0015] 4. Data Recording and Analysis: Recording and analyzing data throughout the entire curing process not only helps to assess the quality of the current repair project, but also provides valuable data support and experience for subsequent similar projects, facilitating continuous optimization of repair processes and parameter settings.

[0016] The technical features of the RFID-based ultraviolet curing repair pipeline quality control system and method of the present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This invention presents an architecture diagram of an RFID-based ultraviolet light curing repair pipeline quality control system.

[0018] Figure 2 : Front view of the flexible tube equipped with an RFID tag according to the present invention.

[0019] Figure 3 Left view of the flexible tube equipped with an RFID tag according to the present invention.

[0020] Figure 1 In this system, 1 represents a flexible tube equipped with RFID tags; 2 represents an RFID reader; 3 represents a data processing and control system; 4 represents an ultraviolet (UV) irradiation device; and 5 represents a compressed air supply and control device. The RFID tags, positioned on the flexible tube 1, collect real-time temperature and pressure data and transmit it to the RFID reader 2. The RFID reader 2 then transmits the data to the data processing and control system 3. The data processing and control system 3 analyzes and processes the data according to preset standards, controlling the irradiation intensity and duration of the UV irradiation device 4, as well as the pressure output of the compressed air supply and control device 5, thereby achieving control over the quality of UV curing repair.

[0021] Figure 2 In the diagram, A, B, C, and D represent the different locations where RFID tags are installed on the top, bottom, and sides of the flexible tube, respectively.

[0022] Figure 3 In the diagram, P represents the monitoring section equipped with RFID tags. The RFID tags are evenly distributed on the surface of the hose at certain intervals to ensure comprehensive monitoring of the temperature and pressure changes of the hose during the curing process. Detailed Implementation

[0023] To better illustrate the objectives, technical solutions, and advantages of this invention, the invention will be further described below with reference to specific embodiments. Those skilled in the art should understand that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0024] Example 1: An RFID-based UV-curable repair pipeline quality control system, comprising: RFID Tags: RFID tags with temperature and pressure sensing capabilities are selected. Four RFID tags are placed every meter on the flexible tubing material used for UV curing repair, located at the top, bottom, and sides of the tubing, for a total of 200 tags. These RFID tags are connected to temperature and pressure sensors to collect real-time temperature and pressure data at their location. These RFID tags are tightly bonded to the tubing material to ensure they will not detach or be damaged during subsequent construction and can accurately sense changes in ambient temperature and pressure. The RFID tags use a flexible polyimide substrate and operate at a frequency of 915MHz. The temperature and pressure sensors are MEMS micro-components, with an operating temperature range of -20℃ to 150℃ and a pressure range of 0 to 10MPa.

[0025] RFID Reader: An RFID reader corresponding to the RFID tag is set up at the repair site. The RFID reader is installed in a suitable position close to the pipeline to be repaired to ensure that it can stably receive the signals sent by the RFID tag. The RFID reader is used to read the temperature and pressure data sent by the RFID tag, as well as the tag's own identification information. The RFID reader is connected to the subsequent data processing and control system through wireless communication.

[0026] Data processing and control system: This system receives data from RFID readers, analyzes and processes the data. On the one hand, it displays the temperature and pressure values ​​collected by each RFID tag in real time, as well as the corresponding location information. On the other hand, it judges and controls the curing process according to the preset temperature and pressure standard range. When the monitored data exceeds the standard range, the system automatically issues an alarm and adjusts the curing parameters such as ultraviolet light irradiation intensity and compressed air pressure according to the set control strategy.

[0027] Ultraviolet irradiation equipment: including ultraviolet lamps and related drive and control devices, which can adjust the intensity and duration of ultraviolet irradiation according to the instructions of the data processing and control system, so as to control the curing speed and degree of the resin and ensure that the temperature is within a suitable range during the curing process.

[0028] Compressed air supply and control equipment: responsible for supplying compressed air into the hose, causing the hose to expand and fit tightly against the inner wall of the pipe. At the same time, it can precisely adjust the pressure of the compressed air according to the instructions of the data processing and control system to meet the curing requirements at different stages and ensure that the contact pressure between the hose and the inner wall of the pipe is stable within a suitable range.

[0029] Example 2: A quality control method for UV-cured repair of pipes based on RFID, using the control system described in Example 1. In an underground drainage pipe repair project in a certain city, a 50-meter-long concrete pipe with a diameter of 800 mm needed to be repaired using UV curing. The pipe had multiple cracks and leaks, affecting its drainage function.

[0030] Specifically, the following steps are included: Equipment Installation and Commissioning: Connect the RFID reader to the data processing and control system, and conduct communication tests to ensure normal data transmission. Specifically, before pulling the resin-impregnated hose into the pipe to be repaired, initialize the hose with RFID tags, ensuring all RFID tags are working properly, and record their identification information and corresponding location information into the data processing and control system. Commission the ultraviolet irradiation equipment, checking that the UV lamp's luminous intensity, irradiation angle, and other parameters meet requirements. Based on the resin's curing characteristics, preset the initial UV irradiation intensity and irradiation time in the data processing and control system. Simultaneously, commission the compressed air supply and control equipment, checking its pressure output stability and accuracy. Based on the material, pipe diameter, and resin characteristics of the pipe to be repaired, preset the initial compressed air pressure value, as well as suitable temperature and pressure standard ranges, in the data processing and control system.

[0031] Repair process: A flexible hose, tagged with RFID and impregnated with resin, is slowly pulled into the pipe to be repaired using a winch or similar equipment, ensuring the hose is correctly positioned and free from twisting. Then, a compressed air supply is connected to inflate the hose, causing it to expand and press tightly against the pipe wall. During inflation, the pressure data from the RFID tag is monitored in real time by a data processing and control system to ensure the pressure gradually rises to the preset value and remains stable.

[0032] The ultraviolet light irradiation equipment is activated to begin the resin curing process. During curing, RFID tags collect real-time temperature and pressure data at their location and send the data to an RFID reader. The RFID reader transmits the data to a data processing and control system, which displays the real-time temperature and pressure values ​​and their variation curves for each RFID tag on a monitoring interface. For example, 10 minutes after curing begins, an RFID tag located 10 meters down the pipeline reports a temperature of 85°C and a pressure of 0.2 MPa. The data processing and control system compares these data with the preset standard range (temperature 80-120°C, pressure 0.15-0.25 MPa) to determine that the curing conditions at that location are normal.

[0033] If any abnormal situation occurs during the curing process, for example, after 20 minutes of curing, the RFID tag located 30 meters down the pipe reports a temperature of 120°C, exceeding the preset temperature limit. At this point, the data processing and control system immediately issues an alarm to alert the operator. Simultaneously, according to the preset control strategy, the system automatically controls the ultraviolet irradiation equipment to reduce the irradiation intensity from the initial 100% to 80%. After a period of adjustment, the temperature at that location is monitored again. Once the temperature returns to the standard range of 80-120°C, the system maintains the current irradiation intensity and continues the curing operation.

[0034] Post-repair procedures: After the UV irradiation equipment completes the curing process of the entire pipeline according to the preset time and speed, the equipment is shut down. The compressed air in the hose is slowly released, and the relevant equipment is removed. The repaired pipeline undergoes quality checks, including endoscopic inspection. The results show that the inner lining of the pipeline is well cured, without defects such as bubbles or cracks, and the repair quality meets the requirements. Simultaneously, the data processing and control system organizes and analyzes the temperature, pressure data, and equipment operating parameters recorded throughout the curing process, generating a detailed repair project report to provide a reference for subsequent similar projects.

[0035] As can be seen from the above embodiments, the RFID-based ultraviolet curing repair quality control system and method of the present invention can effectively achieve quality control of the ultraviolet curing repair process, improving the reliability and stability of the repair project. In practical applications, the system parameters and equipment can be appropriately adjusted and optimized according to different pipeline repair needs and engineering conditions to better meet the pipeline repair requirements under various complex conditions.

Claims

1. A quality control system for ultraviolet curing repair of pipelines based on RFID, characterized in that, include: RFID tags: Multiple RFID tags are placed on the tubing material used for UV curing repair. These RFID tags are connected to temperature and pressure sensors to collect temperature and pressure data at their location in real time. RFID Reader: An RFID reader corresponding to the RFID tag is set up at the repair site to read the temperature and pressure data sent by the RFID tag, as well as the tag's own identification information. The RFID reader is connected to the subsequent data processing and control system via wireless communication. Data processing and control system: This system receives data from RFID readers, analyzes and processes the data. On the one hand, it displays the temperature and pressure values ​​collected by each RFID tag in real time, as well as the corresponding location information. On the other hand, it judges and controls the curing process according to the preset temperature and pressure standard range. When the monitored data exceeds the standard range, the system automatically issues an alarm and adjusts the ultraviolet light irradiation intensity and compressed air pressure curing parameters according to the set control strategy. Ultraviolet irradiation equipment: including ultraviolet lamps and related drive and control devices, which can adjust the intensity and duration of ultraviolet irradiation according to the instructions of the data processing and control system, so as to control the curing speed and degree of the resin and ensure that the temperature during the curing process is within a suitable range; Compressed air supply and control equipment: responsible for supplying compressed air into the hose, causing the hose to expand and fit tightly against the inner wall of the pipe. At the same time, it can precisely adjust the pressure of the compressed air according to the instructions of the data processing and control system to meet the curing requirements at different stages and ensure that the contact pressure between the hose and the inner wall of the pipe is stable within a suitable range.

2. The RFID-based ultraviolet curing repair pipeline quality control system according to claim 1, characterized in that: Four RFID tags are placed on the hose material at intervals of 0.8 to 1.3 meters. The four RFID tags are located at the top, bottom and sides of the hose, respectively.

3. The RFID-based ultraviolet curing repair pipeline quality control system according to claim 1, characterized in that: The RFID tag uses a polyimide flexible substrate.

4. The RFID-based ultraviolet curing repair pipeline quality control system according to any one of claims 1-3, characterized in that: The temperature and pressure sensors are made of MEMS micro-components, with an operating temperature range of -20℃ to 150℃ and a pressure range of 0 to 10MPa.

5. A quality control method for ultraviolet curing repair of pipelines based on RFID, characterized in that, The control system according to any one of claims 1-4 comprises: Preparation phase: Before pulling the resin-impregnated hose into the pipe to be repaired, the hose with RFID tags is initialized to ensure that all RFID tags are working properly and their identification information and corresponding location information are entered into the data processing and control system. At the same time, the ultraviolet irradiation equipment, compressed air supply and control equipment are debugged to ensure that they are in normal working condition. According to the material, pipe diameter and resin characteristics of the pipe to be repaired, the appropriate temperature and pressure standard range is preset in the data processing and control system. Repair process monitoring: After the hose is pulled into the pipe and inflated to fit tightly against the inner wall of the pipe, the ultraviolet light irradiation equipment is activated to start the curing process. At this time, the RFID tag placed on the hose collects the temperature and pressure data at its location in real time and sends this data to the RFID reader via wireless signal. After receiving the data, the RFID reader immediately transmits it to the data processing and control system. The data processing and control system analyzes and processes the received data in real time and dynamically displays the temperature and pressure change curves at each location on the monitoring interface, as well as the comparison with the preset standard range. Anomaly Handling and Control: During the curing process, if the data processing and control system detects that the temperature or pressure at a certain location exceeds the preset standard range, the system will immediately issue an alarm to remind the operator. At the same time, it will automatically adjust the relevant equipment according to the preset control strategy.

6. The RFID-based ultraviolet curing repair pipeline quality control method according to claim 5, characterized in that, It also includes data recording and analysis: throughout the entire UV curing repair process, the data processing and control system records the temperature and pressure data collected by all RFID tags and saves the relevant equipment operating parameters and control operation records. After the repair is completed, these data can be further analyzed to evaluate the stability and reliability of the repair quality, and provide reference and optimization basis for subsequent similar projects.

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