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mikroSDK Library

IR Grid click

Rating:

5

Author: MikroElektronika Team

Last Updated: 2018-07-03

Category: Measurement

Downloaded: 1320 times

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IR Grid click is a thermal imaging sensor. It has an array of 64 very sensitive factory calibrated IR elements (pixels), arranged in 4 rows of 16 pixels, each measuring an object temperature up to 300˚C within its local Field of View (FOV).

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mikroSDK Library Blog

IR Grid click

IR Grid click

Native view of the IR Grid click board.

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IR Grid click

IR Grid click

Front and back view of the IR Grid click board.

View full image

Library Description

Library performs IR and temperature measurement. The sensor gets an IR picture of the detected object (body) and measures ambient temperature, compares that two measurements and shows the IR picture as a 16x4 matrix. For more details check the documentation.

Key functions:

  • float irgrid_getTemperature(uint16_t ptat_data, uint16_t config_reg) - Returns value of ambient temperature.
  • void irgrid_getIRArray(uint16_t *pixel_data) - Functions for reading IR pixels.
  • void irgrid_measurement(uint8_t *Temperature) - Functions for reading all pixels temperature.

Example description

The application is composed of three sections:

  • System Initialization - Initializes I2C module.
  • Application Initialization - Initializes driver and IR Grid click.
  • Application Task - (code snippet) - Reads pixels of temperature and creates temperature matrix which logs on USB-UART every 3 sec.
void applicationTask()
{
 irgrid_measurement(Temperature);
 mikrobus_logWrite("IR Grid Temperature matrix",_LOG_LINE);

 for (irgrid_cnt = 0; irgrid_cnt < 64; irgrid_cnt++)
 {
 if(irgrid_cnt % 16 == 0)
 {
 mikrobus_logWrite(" ",_LOG_LINE);
 }
 if(Temperature[ irgrid_cnt ] < 36)
 {
 mikrobus_logWrite("/",_LOG_BYTE);
 }
 else
 {
 mikrobus_logWrite("*",_LOG_BYTE);
 }
 Delay_10ms();
 }
 mikrobus_logWrite(" ",_LOG_LINE);
 Delay_ms(3000);
}


Other MikroElektronika libraries used in the example:

  • I2C
  • UART

Additional notes and information

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

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