Description
Datasheet
Overview
The NS311 Thermal Occupancy Multi sensor is an advanced low voltage multi sensor digital occupancy controller. It features thermal imaging, light sensing, air particulate matter and multi-gas detection, sound monitoring and language processing. It can easily integrate into an existing building control system. Connect the sensor output signal to an RS485 transceiver of a controller, gateway, or data acquisition unit. Or provision for an existing Wi-Fi network for wireless connectivity.
Operation
The NS311 continuously gathers data from its environment, processes it, and transmits it via wired or wireless communication channels. It also provides control input-output for integrating with other systems. This multifaceted functionality enables a wide range of applications in building automation, environmental monitoring, and occupancy management.
Occupancy Detection:
- The core function relies on a 32×24 thermal imaging sensor. This sensor captures heat signatures within its field of view, enabling it to detect the presence and movement of people.
- The device processes the thermal data to determine occupancy levels, providing real-time information on the number of individuals present in the monitored space.
Environmental Monitoring:
- Air Quality:
- Particulate Matter (PM) Measurement:
- A laser particle counter measures particulate matter (PM) concentrations, specifically PM 1.0, PM 2.5, and PM 10, providing data on airborne particle levels.
- This data is used in conjunction with VOC measurement to detect potential vaping events.
- Total Volatile Organic Compound (TVOC) Measurement:
- A Total Volatile Organic Compound (TVOC) sensor monitors the concentration of various gases, indicating overall air quality.
- This data is used in conjunction with PM measurement to detect potential vaping events.
- Vaping Detection:
- The sensor analyses the data from the PM and VOC sensors to detect rapid increases in both PM and VOC concentrations, that indicate a potential vaping event.
- The sensor analyses the duration of elevated PM2.5 levels to filter out short-lived particle fluctuations that may be caused by other sources.
- The sensor will set the VapingDetected logical state to True, when a possible vaping event is detected.
- The VapingDetected parameter should be used with caution, as it relies on indirect indicators and may produce false positives.
- Temperature and Humidity: Integrated sensors continuously measure ambient temperature and relative humidity, providing data for environmental control.
- Light Sensing: A light sensor measures ambient light levels, enabling applications such as automated lighting control.
Sound Monitoring and Language Processing:
- Stereo microphones capture audio within the sensor’s range.
- The device processes audio data, potentially for sound level monitoring, or advanced language processing for voice commands, or anomaly detection.
Data Communication and Control:
- RS485 Digital Output: The sensor transmits data via an RS485 interface, allowing for wired integration with building management systems (BMS), controllers, gateways, or data acquisition units.
- Wi-Fi Connectivity: The sensor supports Wi-Fi connectivity, enabling wireless data transmission via HTTPS or MQTT protocols. This allows for remote monitoring and control over a network.
- 0-10V Programmable Input/Output: The sensor features a 0-10V programmable input/output, enabling it to control external devices or receive analog signals from other sensors.
- 12V DC Output: The device provides a 12V DC output, that can be used to power other low voltage devices.
Power Supply:
- The sensor operates on a 5-60V DC power supply, providing flexibility for various installation environments.
- 4 wire screw terminals provide the electrical connections.
Product Features and Installation
The NS311 comes in a compact plastic enclosure, designed for easy wall or ceiling mounting. The back mounting plate is removable for easy installation. Simply secure the plate to the desired surface and reattach the front housing. The sensor’s sleek design integrates seamlessly into any environment.
Key Features:
- 32×24 Thermal Imaging Sensor
- Light Sensor
- PM 1.0/2.5/10 Laser Particle Counter
- Total VOC Measurement
- Stereo Microphones
- Temperature, Humidity
- RS485 Digital Output
- Wi-Fi HTTPS/MQTT
- 5-60V DC Supply
- 0-10V Programmable Input/Output
- 12V DC Output
- 4 Wire Screw Terminals
