In modern technology, smart hardware has become an integral part of our daily lives. From smart home devices to autonomous vehicles, advances in sensor technology have made these devices more intelligent and efficient. Among various sensors, the HC-SR04 ultrasonic distance sensor is undoubtedly one of the most common and important components. This document will...

The Basic Principle of Face Tracking Face tracking is an important branch of computer vision, primarily involving technologies such as image processing, machine learning, and artificial intelligence. Its purpose is to detect and track the position and movement trajectory of faces in real-time video, enabling further analysis and processing of the faces. This article...

The Measurement Principle of a Laser Ranging Sensor    The working principle of a laser ranging sensor is that the sensor emits laser beams and then measures the distance by receiving the returned laser beams. There are two methods of laser ranging: pulse method and phase method.    The pulse method is similar to ultrasonic...