Ultrasonic parking sensor monitor systems play an important role in car driving and reversing assistance systems, especially in short distance detection and low-speed driving applications. The following is a summary of the advantages and limitations of ultrasonic sensor systems:
Advantages:
- Cost effectiveness:Ultrasonic Sensorhas a lower cost compared to microwave sensor, making it an affordable sensor choice, especially in parking sensor systems that require a large number of sensors.
- Environmental adaptability: Ultrasonic sensoris not affected by lighting conditions, object color, dust and dirt, and high humidity environments, and can work stably in various environmental conditions.
- Accuracy: Ultrasonic sensor can provide high-precision ranging within 3M-5M short distances, with an accuracy of approximately 1-3cm, suitable for parking and reversing assistance at low speeds.
- Technological maturity:Ultrasonic sensortechnology is already very mature and widely used in various vehicle models, especially in heavy duty truck bus van vehicle ect.
- Easy to integrate: The ultrasonic Radarhas a small size and is easy to install in the bumper of the vehicle, without causing too much impact on the appearance of the vehicle.
limitations:
- Detection range: The detection range of Ultrasonic Sensor is relatively short compared to microwave radar, usually between tens of centimeters to several meters, which limits its application in high-speed driving or long-distance sensing.
- Directionality: Ultrasonic sensorhas poor directionality and requires multiple sensor combinations to achieve comprehensive coverage, which increases the complexity and cost of the system.
- Environmental impact: The performance of ultrasonic radar is affected by environmental factors such as temperature, humidity, and wind speed, which may lead to a decrease in detection accuracy.
- Signal interference: In noisy environments,ultrasonic sensormay be affected by other sound wave signals or electromagnetic interference, which can affect its detection effectiveness.
- Weak detection ability for objects made of specific materials: Ultrasonic radarhas weak detection ability for soft and sound-absorbing materials, which may not reflect enough sound wave signals, resulting in detection failure.
In summary, ultrasonic sensor has significant advantages in autonomous driving and vehicle assistance systems, especially in terms of cost and short-range detection during low-speed driving. However, in order to overcome its limitations, it is usually necessary to combine it with other sensors such as cameras or millimeter wave sensor to achieve more comprehensive environmental perception.