BESTAR Ultrasonic Sensors: Delivering Centimeter-Level Accuracy for Reliable Perception from Parking Assistance to Industrial Distance Measurement
Ultrasonic sensors are developed based on the characteristics of ultrasonic waves as an essential perception tool. Operating within the ultrasonic frequency range, an ultrasonic sensor converts alternating electrical signals into acoustic signals and then converts the returning acoustic waves back into electrical signals. Their core value is using high-frequency sound waves beyond human hearing (typically above 20 kHz) to accurately measure distance, detect objects or monitor liquid levels in a non-contact manner.
This technology mimics the echolocation ability of bats in nature, sensing the environment by calculating the time difference between ultrasonic wave emission, reflection and return. Due to its resistance to interference from light, color or transparency, ultrasonic sensing plays an irreplaceable role in applications such as reversing radars, automotive parking sensors, industrial automation systems, robot navigation and even medical imaging. For many of these scenarios, ultrasonic sensors remain one of the most cost-effective and stable detection methods.
Without support from ultrasonic distance measurement, scenarios that rely on this technology—especially those operating in demanding or high-precision environments—would face significant challenges. For example, during vehicle reversing, the system’s ability to detect low obstacles would be greatly reduced. Under harsh weather or nighttime conditions, collision risks increase substantially. In industrial automation, AGVs operating in complex environments would see reduced navigation and obstacle-avoidance reliability, leading to stoppages or collisions. For drones or robots, weakened near-field perception directly impacts operational stability. These challenges highlight the unique value of automotive ultrasonic sensors and industrial ultrasonic sensors.
BESTAR ultrasonic radars, with their precise distance-measurement capability, wide temperature adaptability and flexible customization options, have become indispensable core components across various application scenarios. Their closed type ultrasonic sensors are widely used in reverse radars, automated parking assist systems, parking-space detection and automatic door sensing, making them a key enabler for modern intelligent mobility and infrastructure.
In BESTAR ultrasonic sensors, the piezoelectric ceramic disc plays a critical role. Utilizing the positive and inverse piezoelectric effects, it converts electrical drive signals into mechanical energy to generate ultrasonic waves. When an obstacle is detected, the reflected wave acts on the sensor, converting mechanical energy back into electrical signals that are transmitted to the ECU. The ECU then calculates the time difference between transmission and reception to accurately determine the distance to the obstacle. As the heart of the ultrasonic transducer, piezoelectric ceramics determine the sensitivity, stability, and overall performance of the sensor.
The selection of ceramic plate is determined according to the customer’s specific application needs. Under the premise of meeting performance requirements, we also consider cost, production processes, and system-integration requirements to provide the most optimal piezoelectric ceramic solution for automotive, industrial, and smart-device applications.
Additionally, BESTAR ultrasonic sensors feature excellent protection performance. Their sealed aluminum-alloy housing allows the sensors to achieve an IP67 waterproof and dustproof rating, ensuring reliability in harsh outdoor or industrial environments. The single-angle beam design enables longer detection distances under identical conditions, while its adjustable beam angle provides automotive OEMs with greater flexibility in system integration. This makes BESTAR an excellent choice for parking sensors, distance-measurement systems and intelligent-sensing modules.
In the era of intelligent perception, true intelligence is not only about advanced technology—it's about confidently handling complex environments. BESTAR is committed to deepening the integration of ultrasonic sensors with multimodal systems, working with partners to continuously enhance reliability and user experience in smart driving, industrial automation, robotics and beyond.