Nowadays, robots can be seen everywhere in our daily life. There are various types of robots, such as industrial robots, service robots, inspection robots, epidemic prevention robots, etc. Their popularity has brought great convenience to our lives. One of the reasons why robots can be effectively put into use is that they can quickly and accurately perceive and measure the environment while moving, avoid collisions with obstacles or people, and cause no economic loss or personal safety accidents.
It can accurately avoid obstacles and reach the destination smoothly because there are two keen "eyes" in front of the robot - ultrasonic sensors. Compared with infrared ranging, the principle of ultrasonic ranging is simpler, because the sound wave will be reflected when encountering obstacles, and the speed of the sound wave is known, so you only need to know the time difference between transmission and reception, you can easily calculate the measurement distance, and then combine the transmission The distance between the receiver and the receiver can calculate the actual distance of the obstacle. And ultrasonic has great penetration ability to liquids and solids, especially in opaque solids, it can penetrate a depth of tens of meters.
Ultrasonic obstacle avoidance sensor A02 is a high-resolution (1mm), high-precision, low-power ultrasonic sensor. In design, it not only deals with interference noise, but also has anti-noise interference ability. Moreover, for the targets of different sizes and the changing power supply voltage, the sensitivity compensation is done. In addition, it also has standard internal temperature compensation, which makes the measured distance data more accurate. It's a great low-cost solution for indoor environments!
Ultrasonic obstacle avoidance sensor A02 Features:
Small size and low cost solution
High resolution up to 1mm
Measurable distance up to 4.5 meters
Various output methods, including pulse width, RS485, serial port, IIC
Low power consumption is suitable for battery-powered systems, only 5mA current for 3.3V power supply
Compensation for size changes in target and operating voltage
Standard internal temperature compensation and optional external temperature compensation
Operating temperature from -15℃＋65℃
Post time: Jul-15-2022