MLX90640-D110 IR Array Thermal Imaging Camera User Manual

1. Introducció

This manual provides detailed instructions for the MLX90640-D110 IR Array Thermal Imaging Camera. This module is designed for non-contact temperature measurements and thermal imaging applications, compatible with various microcontrollers such as Raspberry Pi, ESP32, and STM32.

The MLX90640-D110 utilizes a far-infrared thermal sensor array to detect IR distribution, convert data into surface temperatures, and generate thermal images. Its compact size allows for integration into industrial and intelligent control systems.

Figure 1: MLX90640-D110 IR Array Thermal Imaging Camera Module.

2. Característiques clau

• Adopts the MLX90640 far-infrared thermal sensor array.
• Features 32×24 pixel resolution.
• camp de 110° view (horizontal×vertical: 110°×75°), suitable for short-range measurements.
• Communicates via I2C interface, configurable to fast mode (up to 1MHz data rate).
• Noise Equivalent Temperature Difference (NETD) of 0.1K RMS at 1Hz refresh rate.
• Vol a bordtage translator for compatibility with 3.3V/5V operating voltage.
• Compatible with host platforms such as Raspberry Pi, Arduino (ESP32), and STM32.

3. Especificacions tècniques

Figure 2: Dimensions of the MLX90640-D110 module in millimeters.

4. Configuració i connexió

The MLX90640-D110 module communicates via the I2C interface. Ensure your host microcontroller (e.g., Raspberry Pi, ESP32, STM32) supports I2C communication and provides compatible voltage nivells.

4.1 Pinouts

Connect the module to your microcontroller according to the following pin assignments:

• VCC ↔ 3.3V / 5V (Power Supply)
• GND ↔ GND (Ground)
• SDA ↔ MCU.I2C data line
• SCL ↔ MCU.I2C clock line

Figure 3: MLX90640-D110 module connected with the included PH2.0 4PIN wire.

Figure 4: Pin labels (SCL, SDA, GND, VCC) on the MLX90640-D110 module.

Ex. 4.2ample Connection to Raspberry Pi

To connect the MLX90640-D110 to a Raspberry Pi, ensure the Raspberry Pi's I2C interface is enabled. Connect the pins as follows:

• VCC ↔ Raspberry Pi 3.3V or 5V pin (depending on your setup and voltage translator).
• GND ↔ Raspberry Pi GND pin.
• SDA ↔ Raspberry Pi SDA pin (GPIO2).
• SCL ↔ Raspberry Pi SCL pin (GPIO3).

Figura 5: Example connection of the MLX90640-D110 to a Raspberry Pi, demonstrating thermal image generation.

5. Funcionament

After successful physical connection, software configuration is required to operate the MLX90640-D110. This involves:

1. Enabling I2C: Ensure the I2C interface is enabled on your host microcontroller. For Raspberry Pi, this can typically be done via raspi-config.
2. Instal·lació de biblioteques: Install the necessary libraries for the MLX90640 sensor. Specific libraries and example code are usually available for Raspberry Pi, Arduino (ESP32), and STM32 platforms. Refer to the development resources provided by the manufacturer.
3. Dades de lectura: Use the provided software examples to read raw thermal data from the sensor via the I2C bus.
4. Processing Data: The raw data needs to be processed to convert it into actual temperature values and then into a visual thermal image. The MLX90640 datasheet and associated libraries will contain algorithms for this conversion.
5. Displaying Output: Display the generated thermal image on a connected screen or through a graphical user interface.

The module's refresh rate can be programmed between 0.5Hz and 64Hz, allowing adjustment for different application requirements.

6. Aplicacions

The MLX90640-D110 Thermal Imaging Camera is suitable for a variety of applications, including:

• High-precision non-contact temperature measurements.
• Integration into IR thermal imaging devices and IR thermometers.
• Smart home systems, intelligent building management, and intelligent lighting solutions.
• Industrial temperature control and monitoring.
• Security monitoring, including intrusion and movement detection.

7. Manteniment

The MLX90640-D110 module is a sensitive electronic component. Follow these guidelines for proper maintenance:

• Manipulació: Handle the module with care to avoid physical damage to the sensor lens or circuit board. Avoid touching the sensor surface directly.
• Neteja: If necessary, gently clean the sensor lens with a soft, lint-free cloth. Do not use abrasive materials or harsh chemicals.
• Emmagatzematge: Store the module in a dry, dust-free environment within its specified operating temperature range when not in use.
• Font d'alimentació: Assegureu-vos que la font d'alimentació voltage is within the specified 3.3V/5V range to prevent damage.
• Condicions ambientals: Avoid exposing the module to extreme temperatures, high humidity, or corrosive environments.

8. Solució De Problemes

If you encounter issues with your MLX90640-D110 module, consider the following troubleshooting steps:

• No Data/Communication Errors:
  • Verify all wiring connections (VCC, GND, SDA, SCL) are correct and secure.
  • Confirm the I2C interface is enabled on your host microcontroller.
  • Comproveu la font d'alimentació voltage to the module (3.3V or 5V).
  • Ensure the I2C address (0x33) is correctly configured in your software.
  • Test with a known working I2C device or another MLX90640 module if available, to rule out host controller issues.
• Lectures de temperatura incorrectes:
  • Assegureu-vos que la lent del sensor estigui neta i sense obstruccions.
  • Verify that the correct software libraries and calibration data for the MLX90640 are being used.
  • Check the ambient temperature and ensure it is within the sensor's operating range.
• No Thermal Image Output:
  • Confirm that data is being successfully read from the sensor.
  • Review your data processing and image rendering code for errors.
  • Ensure your display or GUI is correctly configured to receive and show the thermal data.

9. Suport i Recursos

For additional resources, development examples, or technical support, please contact the seller via the Amazon messaging system. They can provide further documentation and assistance for integrating the MLX90640-D110 with your specific platform (Raspberry Pi, Arduino/ESP32, STM32).

Always refer to the official MLX90640 datasheet for in-depth technical details and programming guides.