With the advancement of industrial intelligence and automation, traditional HVAC (Heating, Ventilation, and Air Conditioning) systems are gradually evolving towards smarter systems. The Air Handling Unit (AHU) is one of the core components of HVAC systems, responsible for functions such as air heating, cooling, humidifying, and filtration. In modern buildings and industrial applications, real-time monitoring and control of AHUs are critical for energy efficiency, improved performance, and ensuring stable operation. Embedded controllers, as a key technology, provide powerful data collection and processing capabilities to enable efficient AHU monitoring and management.
The ARMxy BL330 embedded controller is a high-performance, industrial-grade ARM-based platform powered by the Allwinner T113-i dual-core Cortex-A7 and XuanTie C906 RISC-V processors. It supports the Linux operating system and offers a rich set of I/O interfaces and industrial protocol support, making it widely used in industrial automation, energy monitoring, and IoT devices.
Data Collection and Transmission
AHU monitoring requires real-time collection of parameters such as temperature, humidity, airspeed, pressure, and energy consumption. These data are typically transmitted from sensors to a central control system. The BL330’s multiple serial ports (RS232/RS485), digital and analog I/O (DI/DO, AI/AO) interfaces can easily connect various sensors (e.g., PT100 temperature sensors, humidity sensors, airflow sensors, etc.), allowing real-time data acquisition.
Multi-Protocol Support and Remote Monitoring
AHU systems involve multiple devices and protocols (e.g., Modbus, BACnet). The BL330 supports the BLIoTLink protocol conversion software, enabling it to transform data from different devices into standard industrial protocols for easy integration with SCADA systems or cloud platforms. This allows seamless connection of the BL330 with existing AHU monitoring systems, enabling remote monitoring and control.
Local Data Processing and Decision Making
The BL330 features a powerful ARM Cortex-A7 processor and HiFi4 DSP module, enabling local data processing and analysis. For example, temperature and humidity data can be processed in real-time with built-in algorithms to determine whether the HVAC system needs to be activated or adjusted. This reduces system latency and improves response times, which is crucial for applications that require high real-time monitoring.
Smart Alarms and Maintenance
Using the BL330’s GPIO and relay outputs, users can set up alarm mechanisms. When monitored parameters like temperature, humidity, or pressure exceed preset limits, the system can issue alarms or directly control AHU devices to make adjustments. Additionally, the BL330 supports remote device access and fault diagnosis through the BLRAT tool, ensuring the system’s long-term stability.
Hardware Architecture
The ARMxy BL330 acts as the central control unit, interfacing with various sensors and actuators (e.g., fans, heating/cooling devices, humidity control equipment). The controller can communicate with sensors, actuators, and other devices using protocols such as RS485 and CAN. The system can be customized based on actual needs through its rich I/O interfaces and modular design.
Software Architecture
The BL330 supports the Linux operating system and provides development tools like Node-RED and Docker. Users can rapidly develop and deploy monitoring applications. With Node-RED’s graphical programming tool, users can easily design data collection, processing, and alarm workflows to ensure smart management of AHU systems.
Communication and Cloud Integration
The BL330 supports multiple communication protocols, such as Modbus, BACnet, and MQTT, allowing seamless integration with cloud platforms and SCADA systems. Through the cloud platform, administrators can view the real-time status of the AHU system and remotely adjust settings. Additionally, data analysis features help predict device failures, enabling proactive maintenance and avoiding unexpected downtime.
Efficient Real-Time Monitoring: With the powerful processing capabilities and low-latency communication of the ARMxy BL330, the AHU system can perform real-time data collection and processing.
Flexible Expandability: By selecting different I/O boards and communication modules, the system can be flexibly customized to meet the requirements of AHU monitoring in various scenarios.
Smart Alarms and Maintenance: The BL330 supports smart alarm functions, which can quickly detect potential issues and issue alerts. The remote maintenance feature ensures more efficient device management.
Strong Environmental Adaptability: The BL330 has passed stringent environmental testing, ensuring stable operation in extreme temperatures, humidity, and vibration conditions, making it suitable for a wide range of industrial environments.
The ARMxy BL330 embedded controller offers powerful and flexible hardware support for AHU monitoring systems. It provides efficient data collection and processing capabilities, supports integration with SCADA systems and cloud platforms, and ensures reliable monitoring and control of AHU systems. With this solution, users can enhance equipment operation efficiency, reduce energy consumption, and proactively predict and address device issues, ensuring continuous and stable system operation.
