Economic development and transportation construction are inseparable. With the rapid economic development, China pays more and more attention to the perfection of urban rail transit supporting facilities. Nowadays, ur...Economic development and transportation construction are inseparable. With the rapid economic development, China pays more and more attention to the perfection of urban rail transit supporting facilities. Nowadays, urban rail transit has become an important way for Chinese people to travel. Compared with other travel modes, rail transit has the characteristics of safety and convenience. Ensure the smooth operation of urban rail, the signal system is the most critical and important control core. Therefore, the signal system is of great significance to the running safety of rail trains, and a good signal system can avoid signal instability and further ensure the stability and safety of train operation. Therefore, this paper studies the relevant aspects of information security protection of rail transit weak current system, and focuses on the analysis of protection schemes and measures, so as to provide more support for the development and safety of rail transit in China.展开更多
Building intelligent weak current system contains a large number of electronic equipment, which generally has low insulation strength and poor voltage tolerance, and is easy to be damaged in case of lightning weather....Building intelligent weak current system contains a large number of electronic equipment, which generally has low insulation strength and poor voltage tolerance, and is easy to be damaged in case of lightning weather. In order to improve the safety and stability of building intelligent weak current system, this paper analyzes the lightning protection technology of intelligent weak current system.展开更多
A dedicated weak current measurement system was designed to measure the weak currents generated by the neutron ionization chamber.This system incorporates a second-order low-pass filter circuit and the Kalman filterin...A dedicated weak current measurement system was designed to measure the weak currents generated by the neutron ionization chamber.This system incorporates a second-order low-pass filter circuit and the Kalman filtering algorithm to effectively filter out noise and minimize interference in the measurement results.Testing conducted under normal temperature conditions has demonstrated the system's high precision performance.However,it was observed that temperature variations can affect the measurement performance.Data were collected across temperatures ranging from -20 to 70℃,and a temperature correction model was established through linear regression fitting to address this issue.The feasibility of the temperature correction model was confirmed at temperatures of -5 and 40℃,where relative errors remained below 0.1% after applying the temperature correction.The research indicates that the designed measurement system exhibits excellent temperature adaptability and high precision,making it particularly suitable for measuring weak currents.展开更多
With the continuous development of science and technology and the progress of society, intelligent technology has been further promoted and applied in construction engineering, and the development of construction indu...With the continuous development of science and technology and the progress of society, intelligent technology has been further promoted and applied in construction engineering, and the development of construction industry also presents an intelligent trend. The construction of intelligent building focuses on weak current link construction, so the construction company should strengthen the progress control and quality inspection of weak current project construction, so as to improve the quality level of weak current project. Based on the problems existing in the current construction of generic cabling and security system, this paper studies the key points in the construction process and specific construction technology, and puts forward some suggestions from the aspects of construction design and management, hoping to solve some problems existing in the current construction of generic cabling and security system, to provide valuable technical reference for relevant technical personnel and enterprises.展开更多
文摘Economic development and transportation construction are inseparable. With the rapid economic development, China pays more and more attention to the perfection of urban rail transit supporting facilities. Nowadays, urban rail transit has become an important way for Chinese people to travel. Compared with other travel modes, rail transit has the characteristics of safety and convenience. Ensure the smooth operation of urban rail, the signal system is the most critical and important control core. Therefore, the signal system is of great significance to the running safety of rail trains, and a good signal system can avoid signal instability and further ensure the stability and safety of train operation. Therefore, this paper studies the relevant aspects of information security protection of rail transit weak current system, and focuses on the analysis of protection schemes and measures, so as to provide more support for the development and safety of rail transit in China.
文摘Building intelligent weak current system contains a large number of electronic equipment, which generally has low insulation strength and poor voltage tolerance, and is easy to be damaged in case of lightning weather. In order to improve the safety and stability of building intelligent weak current system, this paper analyzes the lightning protection technology of intelligent weak current system.
基金supported by the Youth Science Foundation of Sichuan Province(Nos.2022NSFSC1230 and 2022NSFSC1231)the Science and Technology Innovation Seedling Project of Sichuan Province(No.MZGC20230080)+1 种基金the General project of the National Natural Science Foundation of China(No.12075039)the Key project of the National Natural Science Foundation of China(No.U19A2086)。
文摘A dedicated weak current measurement system was designed to measure the weak currents generated by the neutron ionization chamber.This system incorporates a second-order low-pass filter circuit and the Kalman filtering algorithm to effectively filter out noise and minimize interference in the measurement results.Testing conducted under normal temperature conditions has demonstrated the system's high precision performance.However,it was observed that temperature variations can affect the measurement performance.Data were collected across temperatures ranging from -20 to 70℃,and a temperature correction model was established through linear regression fitting to address this issue.The feasibility of the temperature correction model was confirmed at temperatures of -5 and 40℃,where relative errors remained below 0.1% after applying the temperature correction.The research indicates that the designed measurement system exhibits excellent temperature adaptability and high precision,making it particularly suitable for measuring weak currents.
文摘With the continuous development of science and technology and the progress of society, intelligent technology has been further promoted and applied in construction engineering, and the development of construction industry also presents an intelligent trend. The construction of intelligent building focuses on weak current link construction, so the construction company should strengthen the progress control and quality inspection of weak current project construction, so as to improve the quality level of weak current project. Based on the problems existing in the current construction of generic cabling and security system, this paper studies the key points in the construction process and specific construction technology, and puts forward some suggestions from the aspects of construction design and management, hoping to solve some problems existing in the current construction of generic cabling and security system, to provide valuable technical reference for relevant technical personnel and enterprises.
