Melexis DVK90642 People Detection Development Kit
Melexis DVK90642 People Detection Development Kit is a ready-to-use solution designed to demonstrate privacy-friendly people detection using thermal infrared technology. At the kit's core is the MLX90642, a 32×24 pixel thermal sensor, which enables the accurate detection, counting, and localization of individuals in indoor environments without relying on visual imagery, ensuring complete anonymity. This Melexis kit includes a precompiled, machine-learning-based algorithm that works out of the box, requiring no additional training or calibration.
Optimized for embedded platforms, the kit delivers low resource consumption while providing real-time occupancy data, including the number of people and their positions. With its ability to operate in full darkness and detect stationary individuals, the DVK90642 is ideal for applications such as smart building management, energy efficiency, and access control. The kit comes with a demonstration board powered by an STM32 microcontroller, a wide field-of-view thermal sensor, USB connectivity, and a user-friendly GUI for visualization, making it a fast and practical way to integrate thermal-based people detection into modern systems.
Features
- Evaluation kit for testing the performance of the people detection, counting, and visualization software library
- Allows parameter configuration for specific environments
- Contains MLX90642BCA (wide FOV)
- Based on the STM32F446ME MCU
- Arm® 32-bit Cortex®-M4 CPU
- 512Kbytes of Flash memory
- 128Kbytes + 4Kbytes of SRAM
- 8MHz crystal, up to 180MHz CPU frequency
- Onboard USB Type-C® plug connector
- Algorithm-based real-time monitoring
- Lightweight and optimized for low CPU and memory usage
- Privacy-friendly - no visual image
- Hardware agnostic
- No training needed on-site
- Works in complete darkness
- Reliable even when people aren’t moving
- Available metrics
- Humans detected/not detected
- Number of people in the room
- Coordinates and location history
- 0°C to +40°C ambient temperature range
Applications
- Confined indoor environments
- Elevator management and safety
- Smart building and office management
- Energy optimization
Specifications
- MLX90642ESF-BCA-000-TU fully calibrated far-infrared thermal sensor array
- 32 × 24 pixel matrix
- Housed in an industry-standard TO39 package
- Digital I2C interface
- 3.0V to 3.6V supply voltage range, 3.3V typical
- Supports selectable refresh rates up to 16Hz
- Two field-of-view (FOV) options are available to suit different application scenarios (evaluation kit and people
detection library are tailored for the wide FoV option)- 45°×35° (narrow, MLX90642ESF-BCB-000)
- 110°×75° (wide, MLX90642ESF-BCA-000)
- -40°C to +85°C ambient operating temperature
- -40°C to +260°C object temperature range
- USB cable used to power the evaluation board and transfer data to a computer
- Type-C to Type-A connector type
- 3.0m length
- 5V ±5% supply voltage
Kit Contents
- Demonstration board packaged in a plastic case
- Standard USB cable for communication with the board
- 1x MLX90642ESF-BCA-000-TU
- Female USB Type-C® adapter
Videos
Block Diagram
Kit Placement
Onboard Components
Melexis MLX90642 Thermal IR Sensors
Feature a 32x24 pixel matrix with a high Signal-to-Noise ratio (SNR).