Features of the Laser Rangefinder
Laser measurement is more accurate than ultrasonic measurement, and it is less susceptible to external interference, but requires complex and fast calculations, so it needs to be equipped with a 32-bit Arm Cortex-M0+ core HT32F52352 MCU.
The scheme uses the ToF phase method to measure the phase delay generated by the laser round trip, and then converts the distance represented by the phase delay according to the wavelength of the modulated light, that is, the indirect method is used to measure the time required for the optical round trip line. The theoretical measurement accuracy can reach mm scale. This solution adopts 3.3V~4.2V (or USB power supply), the screen adopts 2.0-inch 176×220 TFT color screen, the working temperature is 0℃~40℃, the standby power consumption is 3.0μA, the power consumption is 157mA, and the product range is 0.2m~60m. Accuracy of ±(1.5
