The Working Principle And Five Common Application Scenarios Of Ultrasonic Sensors

Ultrasonic sensors are sensors that convert ultrasonic signals into other energy signals (usually electrical signals) and are widely used in industries, national defense, biomedicine, and other fields. What is the working principle of an ultrasonic sensor? What are the five commonly used application scenarios?

Ultrasonic sensors are sensors that convert ultrasonic signals into other energy signals (usually electrical signals) and are widely used in industries, national defense, biomedicine, and other fields. What is the working principle of an ultrasonic sensor? What are the five commonly used application scenarios?

The working principle of ultrasonic sensors

By using high-frequency sound waves to detect the position and distance of objects, ultrasonic sensors can usually operate in situations where other types of sensors are insufficient. They work like echolocation in bats or dolphins. These sensors send out sound waves (inaudible to humans), and then detect when the sound waves bounce back after hitting an object. By using sound, ultrasonic sensors can detect objects that frustrate other types of sensors and can work in some very clever situations.

Five Common Application Scenarios of Ultrasonic Sensors

1. Ultrasonic target detection in assisted driving. Many major automobile manufacturers and technology companies are testing fully autonomous autonomous vehicle. Nissan and General Motors even said that by 2020, they will test run autonomous vehicle on the road. These two autonomous vehicle (and human driving vehicles combined with driver assistance technology) have widely used sensors to monitor the road and the surrounding environment. For example, ultrasonic sensors can detect cars in adjacent lanes for "blind spot detection" and alert drivers when someone is in the blind spot.

2. Ultrasonic distance detection. Similarly, ultrasonic sensors can also prevent collisions by detecting when cars or other objects in front and behind the car are dangerously approaching. For example, when parking, sensors can monitor the distance between the car and walls or other vehicles and remind you to stop. This also applies to traffic conditions, as even if two objects are in motion, these sensors can still function properly.

3. Ultrasonic diameter testing. Ultrasonic sensors enter factories far from the road and can help maintain smooth operation of automated production lines. Using printing facilities, such as those that print newspaper or magazine pages, the paper usually starts with a roll, and as the paper is used, the diameter of the roll decreases. Using ultrasonic sensors, the device can automatically detect when the drum is used up, so they can prepare to replace it with a new drum without losing productivity. Ultrasonic sensors can even be used in conjunction with sound-absorbing materials, such as rubber or fillers.

4. Ultrasonic depression detection. Ultrasonic sensors can also ensure that any conveyor belts, wires, or cables that may be used in manufacturing or other industrial environments are placed in their proper positions. Cable sagging can slow down or stop the production line, and these sensors can automatically detect whether these objects are running evenly, even requiring tightening. Ultrasonic sensors can perform with incredible precision, which means they can even detect small defects or faults. Even better, particles such as dust that may be generated during the manufacturing process will not affect their sensing ability.

5. Ultrasonic liquid level detection. This is another example of process automation in the food production industry. The ultrasonic sensor adopts a hygienic design and is fully encapsulated in stainless steel, ensuring good performance even when handling food. For example, it can help dairy factories produce cheese continuously rather than in batches by monitoring the levels of milk and rennet in the coagulation machine. In this way, it knows when to provide more of these ingredients when continuously clearing the cheese curd at the other end.

I believe that everyone has a deeper understanding of the working principle of laser sensors and the five common application scenarios. As a new and very important tool, ultrasonic sensors will have great development space in various aspects, and it will develop towards higher positioning and high accuracy.