In the same office, some people complain about the sweltering heat, while others feel the air conditioning is too cold;
Shortly after a meeting room is fully occupied, many people start yawning and lose concentration;
Certain areas in shopping malls feel stuffy and poorly ventilated even with sparse pedestrian flow;
In classrooms, students tend to get distracted frequently and experience a sharp drop in learning efficiency every afternoon.
These seemingly subjective perceptions essentially stem from the same problem. Traditional indoor environment management relies on human physical sensation for judgment, manual adjustment and empirical operation and maintenance. Lacking accurate data support, advance prediction and equipment linkage mechanisms, environmental regulation always lags behind environmental changes. It only enables troubleshooting after problems occur, and can never strike a balance among comfort, health and energy efficiency.
I. Deficiencies of Traditional Environmental Management: No Data, No Prediction, No Linkage
1. Unreliable subjective physical sensation
Human perception of temperature, humidity and air pollutants is highly lagging and differentiated. Slight excessive levels of formaldehyde, TVOC and carbon dioxide are completely imperceptible to humans, yet long-term exposure will continuously impair physical health and reduce concentration.
2. Independent and uncoordinated equipment operation
Air conditioners only adjust temperature, dehumidifiers only control humidity, and fresh air systems only handle ventilation. All devices operate independently without coordinated linkage logic. Excessive equipment operation leads to energy waste, while untimely startup and shutdown causes environmental imbalance, making all-round balanced environmental control impossible.
3. Remedial post-event adjustment without preventive control
Traditional operation and maintenance depends on manual inspection and passive adjustment. Without data trend prediction, problems such as mold growth, turbid air and unbalanced temperature and humidity can only be rectified after occurrence, failing to eliminate potential risks at the source.
With the comprehensive upgrading of smart buildings and healthy human settlements, extensive manual management can no longer meet current demands. The core of the new-generation indoor environment management lies in three key capabilities: perception, early warning and linkage.
II. Intelligent Closed-Loop Environmental Control: IEQ Environmental Monitoring System Solution
Perception: Convert invisible environmental conditions into quantifiable data
1. The IEQ main system conducts real-time monitoring of multiple environmental parameters:
PM2.5/PM10 (particulate matter pollution), CO2 (ventilation and passenger density), TVOC (volatile organic compounds), temperature, humidity and illumination (thermal comfort environment).
2. Expandable modules support flexible monitoring of extended parameters:
Radar modules monitor noise, air pressure and human presence via millimeter-wave sensors; gas sensor modules detect formaldehyde, oxygen, CO, H2S, NH3, O3, Cl2, NO2 and other indicators.
The system transforms environmental judgments that previously relied on physical sensation into accurate, quantifiable data status.
Early Warning: Identify potential problems before discomfort occurs
The IEQ system conducts intelligent judgment based on threshold standards and trend analysis:
- Sustained CO2 rise → Early warning of insufficient ventilation
- Gradual PM2.5 increase → Reminder of external pollutant intrusion
- Abnormal temperature fluctuation → Prompt of uneven air conditioning zoning control
- Abnormal VOC level → Alert of possible material volatile release
The core advantage is realizing pre-warning before human discomfort, instead of taking remedial measures after users feel unwell.
Linkage: Enable automatic responsive adjustment of equipment
As the core step of the system, linkage realizes the upgrade from simple monitoring to intelligent control. The IEQ system can link with various building equipment to achieve automatic regulation:
- Linked with fresh air systems: Automatically increase ventilation volume
- Linked with air conditioning systems: Adjust temperature and wind speed
- Linked with humidification/dehumidification equipment: Maintain optimal humidity range
- Linked with smart curtains: Regulate solar radiation and thermal load
- Linked with building BA systems: Implement overall environmental optimization strategies
In short, the indoor environment realizes autonomous intelligent regulation, freeing manual intervention.
Typical operating logic: When the number of people in the meeting room increases → CO2 concentration rises → Sensors capture data changes → The system identifies insufficient ventilation → Automatically increases fresh air volume → Restores indoor air freshness → Sustains personnel concentration and work efficiency. The whole process takes only a few minutes with imperceptible intelligent adjustment for users.
Centering on precise perception, intelligent early warning and full-scenario linkage, DST Technology IEQ Indoor Environmental Quality Monitoring System builds a full closed-loop chain of environmental monitoring, data analysis and equipment regulation. It enables the indoor environment to actively adapt to human needs, rather than making people adapt to the passive environment. For diverse scenarios including campuses, offices, medical institutions, residential buildings, hotels and smart parks, it creates a new intelligent human settlement ecosystem that is healthier, more comfortable, energy-saving and smarter.
