How Does Ultrasonic Sensor Help in Parking the Car?
1.What Is an Ultrasonic Sensor?
2.Ultrasonic Sensors in Transporting Vehicles During Parking
3.Why Ultrasonic Sensor is Necessary for Safe Parking
4.The Future of Ultrasonic Sensor in Automotive System
5.Conclusion
What Is an Ultrasonic Sensor?
An ultrasonic sensor operates by sending out high frequency sound waves and measuring the distance from these sound waves based on the echo that bounces back to the sensor. It functions usually above 20kHz and is hence reliable where optical systems or infrared systems could fail. Because of this stability, ultrasonic sensors can be applied in many application areas, such as vehicles, industrial automation, smart devices and robotics. If you want to know more about ultrasonic sensor, you can turn to this blog《Getting Started with an Ultrasonic Sensor: Definition,Principles & Applications》. Today, we will focus on automotive electronics-how does ultrasonic sensor help in parking the car.
Ultrasonic Sensors in Transporting Vehicles During Parking
During the automotive parking, a ultrasonic parking sensor constantly emits short pulses in several directions. The pulses are reflected off nearby surfaces and distance is calculated by the system using: Distance = (Speed of Sound * Echo time)/2
This fast and repeated sampling provides real time detection to the vehicle that allows it to spot the obstacle with a high precision.
As parking systems change, ultrasonic sensor components are required from manufacturers and solution providers with increased stability, echo sensitivity and durability. Reliable sensing elements are also important because the performance of the whole system depends on the accurate and responsive ultrasonic transducer.
Bestar has waterproof and high precision ultrasonic sensors designed for parking ultrasonic transducer. Using high quality piezoelectric ceramics materials and the optimum designed acoustic structures, our units offer fast response, consistent output and good operation, even under harsh outdoor operation conditions.
To suit a variety of installation situations, we offer both open and closed types. Open-type ultrasonic sensors can be used in ultrasonic ranging devices, burglar alarms, liveness detection, electronic rulers, and remote-controlled toys; closed-type ultrasonic sensors can be used in reversing radar automatic parking assistance systems, parking space detection in parking lots, and automatic door detection.
Ultrasonic sensor product parameters for reversing radar detector
|
Model |
BPU1555IFAH09-01W045 |
BPU1555IFAH09HN |
BPU1458IFAH12 |
BPU1458IFAH12D |
|
Sensitivity |
480-1000us |
≥140(Ø75mmPVC@1.2m) |
≥200μs(Φ 75 mm * 1 m PVC tube at 150 cm) |
≥200μs(Φ 75 mm * 1 m PVC tube at 150 cm) |
|
Capacitance |
1300±15%pF( at 1KHz) |
2000pF±15% at 1KHz |
1900±10% pFat 1KHz |
1900±10% pFat 1KHz |
|
Directivity |
90±15°,45±10° |
105±10,55±10 |
X=110±10° Y=50±5° |
X=110±10° Y=50±5° |
|
Resonance Time |
≤1.9ms |
0.8-1.8ms |
/ |
/ |
|
Frequency Response |
/ |
/ |
58±1KHz |
58±1KHz |
|
Input Voltage |
160Vp-p |
160Vp-p |
160Vp-p |
160Vp-p |
|
Casing Material |
Aluminum |
Aluminum |
Aluminum |
Aluminum |
|
Noise |
/ |
/ |
≤300mV(Within the 0ms--20ms) |
≤300mV(Within the 0ms--20ms) |
If you would like to know more about Ultrasonic Sensor specifications, please contact us promptly.
Why Ultrasonic Sensor is Necessary for Safe Parking
1.Enhancing Parking Safety
A very high precision ultrasonic distance sensor minimizes distracting these incidents because of early and accurate warnings.
Ultrasonic technology continues working consistently in
2.Reliable Under All Conditions
Dark environments and low light environments
Being exposed to rain, fog, snow and water
Dusty or reflective surroundings
This makes the waterproof ultrasonic sensor a reliable solution for short range detection.
3.Energy Efficient and Long Life Operation
The piezoelectric ceramic element in the ultrasonic sensor requires small levels of power and will retain stability for years so long term operation is reliable.
4.Flexibility in Multiple Application
Outside of car parking help, ultrasonic tech can also be found in numerous areas of the following:
- Industrial robots (navigation, obstacle avoidance)
- Automated systems automation to detect the materials
- Measuring systems of equipment
- Sensors for the detection of human presence
These various applications go on to prove the strength and accuracy of ultrasonic technology.

The Future of Ultrasonic Sensor in Automotive System
The next generation of parking systems will integrate multiple sensing technologies, including cameras, radar, LiDAR, and ultrasonic parking sensors. This combination will create a comprehensive surrounding perception system, enabling automated parking and low-speed maneuvering with high precision.
Advances in multilayer piezoelectric ceramic materials will allow ultrasonic sensors to achieve higher detection sensitivity, lower noise levels, faster response times and improved measurement resolution.
In addition, artificial intelligence will further enhance parking features. AI-enabled systems will be able to classify different types of obstacles, predict their movement, and perform fully automated parking (APA) with greater reliability and safety.
Conclusion
With precision distance measurement, wide environmental adaptability and low power consumption, ultrasonic sensor helps to make driving safer and more comfortable. Powered by sophisticated piezoelectric ceramic materials and signal processing precision, ultrasonic parking sensors will keep progressing. From automobiles to robots and to industrial systems, ultrasonic sensing technology-backed by high-quality materials and intelligent algorithms which will continue to play a major role in the short range measurement strategy in the mobility and automation industries.
Whether your requirement is a compact motion - detector sensor, an industrial - grade unit or even a customized distance-measurement solution we've got the building of performance for other safer and reliable parking assistance systems. Our powerful research and development abilities and stringent production requirements ensure that all ultrasonic parking sensors can meet the long-term instability and heating expectation of global customers.








