1. Product Overview
The INK458 Tunnel Environmental Monitoring System is a comprehensive, real-time multi-parameter monitoring solution designed for tunnels. It tracks meteorological data, particulate matter, toxic gases, noise, visibility, and illumination, and seamlessly integrates with other tunnel systems to reduce traffic accident risks through continuous data analysis. The system is structured into three core subsystems: front-end data acquisition, communication & transmission, and a central monitoring platform.
2. Sensing Technology & Self-Cleaning System
Multi-Sensor Integration: The system combines specialized sensors for different parameters:
- Gas sensors use electrochemical and NDIR technology to detect toxic and common gases (CO₂, O₂, H₂S, SO₂, NO₂, CO, O₃, TVOC).
- Laser scattering sensors monitor particulate matter (PM2.5, PM10).
- Meteorological sensors capture temperature, humidity, wind speed/direction, and pressure.
- Additional modules measure noise, illumination, and optional visibility.
Anti-Interference Design: Built-in data processing algorithms filter out tunnel-specific noise, vibrations, and electromagnetic interference, ensuring stable and reliable readings.
Environmental Adaptability: Rugged, sealed sensor housings resist dust, moisture, and corrosive tunnel environments. While it does not feature an active self-cleaning mechanism, the modular design allows for easy access and maintenance.
3. Key Features & Competitive Advantages
Multi-Gas & Multi-Factor Monitoring: Supports up to 18+ parameters in a single system, eliminating the need for multiple standalone devices.
High Performance: Delivers high accuracy, fast response times, long service life, and stable performance in harsh conditions.
Flexible Configuration: Monitoring factors are freely expandable and combinable to match specific tunnel requirements.
Easy Integration & Operation: Supports standard Modbus protocol with RS485/RS232/GPRS communication, and offers multiple data viewing options for simple operation and maintenance.
Low Power Consumption: <1.2W power draw reduces long-term operational costs.
4. Technical Specifications
| Parameter |
Specification |
| Monitoring Factors |
CO₂, O₂, H₂S, SO₂, NO₂, CO, O₃, TVOC, PM2.5, PM10, temperature, humidity, wind direction, wind speed, pressure, noise, illumination, visibility (optional) |
| Operating Temperature |
-30 ~ +50 °C |
| Operating Humidity |
10 ~ 95 %RH |
| Operating Pressure |
80 ~ 120 kPa |
| Power Supply |
AC 220 V / DC 12 V |
| Communication Protocol |
Standard Modbus |
| Communication |
RS485 / RS232 or GPRS |
| Power Consumption |
<1.2 W |
| Data Update Cycle |
10 s; recommend using data after 48 h stabilization |
5. Applications
Highway & Expressway Tunnels: Monitors toxic gas levels, visibility, and weather conditions to trigger ventilation, speed limit, or safety warning adjustments.
Urban Underpasses & Subway Tunnels: Tracks air quality, noise, and illumination to ensure safe, comfortable conditions for pedestrians and vehicles.
Mining & Industrial Tunnels: Detects hazardous gases and oxygen levels to protect workers from toxic exposure and oxygen depletion.
Intelligent Transportation Systems (ITS): Integrates with tunnel management platforms to provide real-time environmental data for automated control of ventilation, lighting, and safety systems.
Long & Mountain Tunnels: Monitors wind, pressure, and visibility to warn drivers of adverse conditions like fog or strong winds, preventing collisions.
