Last Updated on April 13, 2023 by You Ling
Application of Piezoelectric Ceramics in parking sensor
What is parking sensor?
A parking sensor is a device that uses ultrasonic or electromagnetic technology to detect obstacles or other vehicles in the vicinity of a vehicle and provide an alert to the driver to avoid collisions. It is also known as a parking aid or backup sensor.
Typically, a parking sensor consists of several small sensors, usually mounted on the rear bumper of a vehicle, that emit a sound wave or electromagnetic field and measure the time it takes for the signal to bounce back after it hits an obstacle. The sensors send this information to a control unit, which processes the data and determines the distance and direction of the obstacle. The control unit then sends an audio or visual signal to the driver to indicate the proximity of the obstacle.
How parking sensor works?
Parking sensors typically work by using ultrasonic or electromagnetic technology to detect obstacles in the vicinity of a vehicle and provide an alert to the driver to avoid collisions.
Ultrasonic parking sensors emit high-frequency sound waves from sensors that are mounted on the rear bumper of a vehicle. The sound waves bounce off any obstacle in the vicinity and return to the sensor. The time it takes for the sound waves to bounce back to the sensor is used to calculate the distance between the vehicle and the obstacle. The sensor sends this information to a control unit, which processes the data and determines the proximity of the obstacle. The control unit then sends an audio or visual signal to the driver to indicate the proximity of the obstacle.
Which piezo elements can bu used for parking sensor?
Parking sensors typically use ultrasonic technology to detect obstacles, and they rely on piezoelectric materials to generate and receive sound waves. There are several piezoelectric materials that can be used for this purpose, including:
Lead zirconate titanate (PZT): PZT is a ceramic material that is commonly used in ultrasonic sensors, including parking sensors. It is durable and has good piezoelectric properties.
Polyvinylidene fluoride (PVDF): PVDF is a polymer material that exhibits good piezoelectric properties and is often used in flexible, low-cost ultrasonic sensors.
Overall, the choice of piezoelectric material for a parking sensor depends on the specific application requirements, such as the frequency range, sensitivity, temperature range, and durability needed. The material must be able to generate and receive sound waves efficiently and reliably in order to provide accurate obstacle detection.