Smart Sensing & Edge DSPShipping
AQ-7 Air Quality Monitor
Combines laser particulate, NDIR CO₂ and metal-oxide VOC sensing with an MCU running temperature/humidity compensation and anomaly detection at the edge.
Block diagram
Selected block
PM Sensor
Laser scattering, UART
Connects to: MCU
Hover or tap a block to explore.
Specifications
| Channels | PM1/2.5/10, CO₂, TVOC, T, RH |
| CO₂ accuracy | ±(40 ppm + 3%) |
| MCU | Cortex-M4F @ 120 MHz |
| Connectivity | Wi-Fi / BLE 5 |
| Power | USB-C 5 V, 0.6 W avg |
| Update rate | 1 s |
Engineering breakdown
- 01
Sensor fusion
Kalman-filtered baseline tracking removes long-term MOX drift without cloud calibration.
- 02
Airflow design
Ducted enclosure isolates the PM fan from the CO₂ chamber to cut cross-interference.
- 03
Firmware
OTA-updatable firmware with local alerting thresholds and MQTT export.
Interested in this design?
Ask about licensing, customization or a similar build.