Handheld infrared thermal imaging

The next three pictures inside
the front and back are pure thermal imaging, thermal imaging + contour detection, and pure camera effects production instructions: The BOM directly exported by Lichuang EDA on the materials is basically correct, and you also need to purchase the MLX90640 sensor and STM32H7B0 main control. Chip, 3.2-inch 320*240tft screen ST7789 40pin, as long as the pins can be aligned, battery, OV7670 camera. There are 3D source files and 3D printed files in the shell attachment. The 3D source files were drawn by UG, and there are three parts in total; in addition, 4 M3*10 copper pillars and 4 M3*14 screws are needed. If it is light curing, you need to prepare an M3 tap to tap the lower shell. If it is FDM, you can use a knurled nut. There is no countersunk hole in the upper shell. If you want a good appearance, you can use chamfering to drill the countersunk hole and use countersunk screws. Or modify the file. You can download the program using USB or the debugging interface at the bottom. It is recommended to use STM32CUBEprogram. For USB downloading, you need to press and hold the power switch button (you cannot send it during the whole download process), then press and hold boot, press reset, and then release boot to download via USB connection. For the time being, only the hex file is placed. Instructions for use: From right to left on the top are TYPEC’s data/charging interface, power switch button, mode switch button, color switch button, refresh rate switch button and screenshot button. The USB interface is connected to the computer to read the screenshots and retained pictures. The power switch button is a single button start and stop. Mode switching is the three mode switching shown in the picture above. Color switching is a pseudo-color code that switches between several grayscales and pseudo-colors. Refresh rate switching is to switch the refresh rate of thermal imaging. The third pure camera is not affected by this and can be switched to 2-32 frames. When mode two is switched to 32 frames, it can only actually be 18 frames. Others: Some flying lines in the picture were errors in the original version and have been corrected. Mode 2 only performs edge detection on the OV7670 picture and directly superimposes it onto the thermal imaging picture. Due to the difference in lens angle and installation position, there will be misalignment, especially in the horizontal direction. Only at medium and long distances can the middle area be better aligned. Edge detection has already drained the performance of the MCU, and it only operates on 1/9 of the pixels. There is no condition and I will not do a more advanced dual-camera algorithm. But there are still some improvements in use.