The hottest inventory of sensors hidden in the sub

2022-08-23
  • Detail

Taking stock of the sensors "hidden" in the subway

subway has become an effective form of human use of underground space, which has fully alleviated the urban ground traffic. With its advantages of large traffic volume, good punctuality, fast and safe, high traffic efficiency and environmental protection, it has become the focus of the construction of underground space in modern cities. However, during the operation of the subway, the power consumption of the environmental control system accounts for a considerable proportion, especially the power consumption of the environmental control system with air conditioning accounts for about 40% of the power consumption of the whole subway. However, in order to provide passengers with a satisfactory and comfortable thermal environment, there must be a subway environmental control system

therefore, how to take energy-saving measures in the environmental control system is of great significance. The subway has a large traffic volume, that is, the passenger flow is large, and the required fresh air volume changes greatly. Therefore, in the selection of subway, it is also necessary to effectively consider these parameters. The air conditioning load changes greatly, and the means of automatic control must be used to realize energy saving. Automatic control technology has also actively assisted in promoting the transformation and upgrading of Nangang and Meigang. It has been more and more applied to all kinds of air conditioning systems. In the system with centralized mechanical cooling equipment for the fatigue life test of glass fiber reinforced plastic/elastic components and a wide range of working conditions, automatic control technology has played a great role in the energy-saving and optimal operation of the system. As an indispensable part of the control system, environmental sensors are playing an increasingly important role in the subway

in the environmental control system of the subway, we use indoor temperature and humidity sensors, pipeline temperature and humidity sensors and CO2 concentration sensors

we can set indoor temperature and humidity sensors in public areas such as the station hall and platform area of the station and important equipment rooms to monitor the real-time temperature and humidity of the station. These parameters can help operators make reasonable adjustments to the working conditions of various systems in the station, so as to keep the public area of the station in a more comfortable environment and ensure that the equipment room is always under the appropriate temperature. Indoor temperature and humidity sensors are generally installed on the wall or top of the station hall, platform and equipment room

at the same time, we can install duct temperature and humidity sensors in the fresh air room and return air room of the station to monitor the temperature and humidity of outdoor fresh air and in the station. The environmental control system can judge the environmental quality of the station according to the data collected by the sensor, and automatically switch according to various pre-designed working conditions, so as to realize the automatic control of the station environment by the automatic control system, so that the station environment is always in a more comfortable environment to jointly solve the problems in material utilization, and finally achieve the purpose of energy conservation and emission reduction. Pipeline temperature and humidity sensors are generally installed on the walls of fresh air chamber and return air chamber

we can also install a CO2 concentration sensor in the return air room of the station to monitor the concentration of CO2 in the station. In the station, due to people's breathing, the concentration of CO2 will increase. When the concentration of CO2 is at a large value, the current air quality of the station will pose a threat to the health of passengers. Therefore, operators can timely adjust the working conditions in the public area of the station according to the data collected by the CO2 concentration sensor, so as to ensure that the air quality of the station is always in a good state

Copyright © 2011 JIN SHI