Design Of UV CIPP Hose Curing Detection And Control System

With the advance of urbanization in China,underground pipelines have become an essential part of urban infrastructure and construction.However,due to an increase in use time and outdated construction techniques,accidents involving underground pipelines frequently occur.To ensure the normal production and living of urban residents,underground pipeline repair problems need urgent resolution.Among them,UV-CIPP non-excavation repair technology has advantages such as fast construction,high pipe quality,and minimal impact on traffic.It has become the leading development direction in the field of pipeline repair in China.However,there are currently issues with obtaining curing degrees during the UV-CIPP non-excavation repair process,such as inadequate curing of CIPP hoses,unstable UV energy sources,and unstable pipe quality after repair.Therefore,this article studies the RFID-based UV-CIPP hose curing detection method and designs a CIPP hose UV light curing control system that can achieve constant light intensity control.Curing degree is an important indicator for evaluating the curing process and quality of composite materials.In order to achieve online monitoring of the curing degree of CIPP(cured-in-place pipe)hoses,this study designed an RFID-based UV-CIPP hose curing degree detection system.The study investigated the variation pattern of the RSSI(received signal strength indicator)values of hoses with integrated RFID electronic tags during the curing period,analyzed the principle of RFID-based curing degree detection,and conducted curing degree detection experiments on CIPP hoses.The dielectric analysis method(DEA)was used as a reference method for curing monitoring,and the measurement values obtained by RFID were compared and analyzed.The experimental results showed that the designed RFID system is suitable for the curing degree detection of CIPP hoses.The stability of the UV mercury lamp light intensity has a significant impact on the curing quality of CIPP hoses.In order to ensure that the UV mercury lamp is not affected by voltage fluctuations,temperature changes,and other factors during the UV curing process,and to maintain the light intensity at a preset value,this study analyzed the principle of regulating the light intensity of the UV mercury lamp,established a mathematical model for the UV mercury lamp dimming system,and used the scaling factor in the variable domain fuzzy PID control algorithm to adjust the initial domain range of the fuzzy controller in real-time,thereby improving the accuracy and anti-interference performance of the light intensity control of the UV mercury lamp dimming system.A CIPP(cured-in-place pipe)UV curing control system based on Siemens PLC was constructed,and a light intensity control system based on STM32 microcontroller was designed.The study also designed a mercury lamp drive circuit,completed the upper and lower computer program design of the UV curing control system,and conducted experiments to verify the light intensity control effect of the UV mercury lamp.CIPP hose UV curing and mechanical performance testing experiments were carried out.The experimental results showed that the UV mercury lamp curing control system developed in this study can achieve CIPP hose curing control,and the cured pipelines meet the performance requirements of non-excavation repaired pipelines.