Ultrasonic/Radar Sensor
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Ultrasonic sensor: the most advanced technology for object and liquid detection
Precise, versatile, and resistant, ultrasonic sensors allow for the non-contact detection of objects, liquids, or bulk materials, even in difficult environmental conditions.Thanks to ultrasonic technology, they guarantee stable operation regardless of the material's color, transparency, or reflectivity.
Discover also capacitive and inductive sensors.
Ultrasonic sensor: what it is and what it is used for
An ultrasonic sensor is a small device that detects objects and liquids via ultrasonic waves and calculates the distance to the object using the time-of-flight principle. It is ideal when wide detection ranges are required and ensures reliable measurements even with transparent, reflective, or high-contrast objects.
Without the need for contact, the ultrasonic sensor measures fill levels, heights, or slopes, and monitors the presence and counts objects. It can be used regardless of color or surface characteristics. Even fog, dust, or dirt do not compromise its operation.
Ultrasonic sensor: how it works
The ultrasonic sensor works according to the time-of-flight measurement principle of ultrasonic waves and is insensitive to dirt. It detects objects and fill levels without contact thanks to a vibrating ceramic element that generates short ultrasonic pulses cyclically.
The sound pulse propagates at the speed of sound in the air and, when it hits an object, it is reflected in the form of an echo, which the sensor receives again. The distance between the sensor and the object is calculated by measuring the time elapsed between the emission of the pulse and the reception of the echo.
Thanks to this measurement principle, ultrasonic sensors offer excellent background suppression and can detect objects of almost all reflective materials, such as glass, wood, metal, plastic, liquids, or thin foils. Even in difficult environments with dust, steam, dirt, or paint mist, they continue to operate reliably.
Ultrasonic sensor: installation
Once the most suitable ultrasonic sensor for the application has been chosen, it is important to install it correctly to ensure optimal performance. The sensor can be mounted in any position, provided that some basic conditions are met:
Avoid deposits on the active surface that emits the sound
Maintain minimum distances between multiple ultrasonic sensors to prevent interference or switching errors
Ultrasonic sensor: the main advantages
Here are the main ones:
Detection of almost all objects regardless of difficult environmental conditions, object gloss, color, and material transparency
Insensitive to dust, humidity, and ambient light
Reduced reflections from interfering objects
Temperature compensation
High process reliability
Reliable presence detection even with complex object shapes (grids, springs)
Quick and easy installation and commissioning
Excellent background suppression
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