In today’s society, the rapid development of the subway has become the main means of transportation for short-distance travel. Environmental sensors play an increasingly important role in subways. The use of temperature sensors, carbon dioxide sensors, PM2.5 dust sensors, and other environmental sensors can ensure that the air quality in subway stations and subways is always in good condition.
The subway is usually underground, and the flow of people is very large. Environmental parameter monitoring is very important, which is related to people’s safety and physical health. The subway environment control system is an important means to maintain the stability and safety of the air in the subway station and the subway. The air conditioning and ventilation system is a long-term operation, and the power consumption is very large, accounting for about 40% of the entire subway power consumption.
Maybe everyone has this experience: At the peak of commuting, there will be dizziness when taking the subway. Because the number of people is too high, the carbon dioxide content is too high, and the lack of oxygen causes discomfort to the human body. When there are few people, you will feel chilly. In fact, the traditional subway environment control system is just a fool-like continuous cooling and exhaust. The cooling capacity and exhaust volume are almost constant at all times. When there are many people, the effect will be poor, but when there are few people, it feels good.
The application of modern sensors has made the subway environment control system intelligent and user-friendly. It will monitor the temperature and humidity, CO2 content, PM2.5, and other parameters in the subway environment in real-time. It can intelligently adjust the cooling capacity and exhaust air volume and create a comfortable environment for everyone. This has greatly optimized the energy saving of the system. As an indispensable part of the control system, the application of environmental sensors in the subway is becoming more and more important.
Temperature and humidity sensor in the metro environment
Metro passenger flow is large, and the amount of fresh air required varies greatly. Therefore, the air conditioning load of the subway varies greatly, and energy-saving must be achieved by means of automatic control.
In this regard, indoor temperature sensors and humidity sensors can be installed in the halls and platform areas of subway stations, on subways, and in important equipment rooms to monitor the real-time temperature and humidity of stations. The subway environment control system can make reasonable adjustments to the station according to these parameters to keep these places always in a more comfortable environment. In addition, real-time temperature and humidity can also be shown on the screen to let passengers know the current temperature and humidity conditions.
Carbon dioxide sensor in the subway environment
In addition, carbon dioxide sensors can also be installed in the return air room of the station and in the subway to monitor the concentration of carbon dioxide in the station. At the station, the carbon dioxide concentration will increase due to human breathing. When the carbon dioxide concentration is at a large value, the current station air quality poses a threat to passenger health. Therefore, the subway environmental control system can adjust the working conditions of the public area of the station in time according to the data collected by the carbon dioxide sensor to ensure the good air quality of the station. In that case, we will no longer feel dizzy due to hypoxia.
PM2.5 sensor in the subway environment
Usually, indoor PM2.5 particulate pollution is also very serious, especially when there are many people, but it is invisible to the touch, we can not understand its specific situation, but it is very harmful to the human body. The development of PM2.5 sensors allows people to view the situation of PM2.5 in the subway more intuitively. At the same time, the subway environmental control system can also monitor these parameters at any time. Once the standard is exceeded, the exhaust ventilation or air purification system can be intelligently activated to improve the air quality in the station and the subway. Therefore, the PM2.5 sensor is also very important. Now everyone pays attention to PM2.5. All subways often measure the value of PM2.5. Of course, if necessary, PM1.0 and PM10 can also be measured.