What is the detection range of a parking sensor?

[DiLouis]

The detection range of a parking sensor is between 0.3 to 1.5 meters. The shorter the detection range, the more accurate the probe. The working principle of a parking sensor is as follows: under the control of the controller, the sensor emits ultrasonic signals. When an obstacle is encountered, an echo signal is generated. After receiving the echo signal, the sensor processes the data through the controller to determine the position of the obstacle. The distance is then displayed on the display, and a warning signal is issued to achieve safe parking. The reasons why a parking sensor may not work include: 1. Malfunction of the buzzer or display; 2. Damage to the parking sensor wiring; 3. Loose connection between the buzzer or display and the main unit.

[DelBriella]

The detection range of a reversing radar is typically around 1.5 to 2.5 meters, depending on the vehicle model and installation. For example, if the sensors are mounted on the bumper at a lower height, the detection range might be smaller. In my case, driving an SUV with higher-mounted sensors, the alarm often starts at a distance of over 2 meters. Environmental factors like rain or dust can interfere with the ultrasonic signals, reducing the range to about 1 meter. I recommend drivers not rely solely on the radar while reversing; using the rearview mirror in combination is more reliable. Regularly checking the sensors for cleanliness is crucial, as dirt can cause false alarms or reduced sensitivity, increasing the risk of scratches. Upgrading to modern systems, some of which allow sensitivity adjustments, can better adapt to different parking scenarios.

[MacErin]

When we usually park, the detection range of the parking sensors is mostly between 1 to 2 meters, and it feels different when driving different vehicles. Once when I was driving a friend's sedan, it started beeping at about 1.5 meters from an obstacle, with the speed of the beeps increasing to warn me to stop; when switching to a large truck, the alarm only sounded at around 2 meters. The key is to familiarize yourself with your vehicle's behavior, as the change in sound can help you estimate a safe distance. In daily use, I've noticed that hard objects like iron poles are detected from farther away, while soft things like grass or plastic bags might be ignored by the sensors. Maintenance is simple—just wipe the sensors with a slightly damp cloth to avoid false alarms. Overall, this distance design is meant to give drivers enough reaction time to avoid getting too close to danger.

[Perez]

The detection range of a reversing radar is generally maintained at 1.5 to 2.5 meters, which is crucial for safety. If the distance is too short, such as less than 1 meter, the driver may not have enough time to brake, leading to a potential collision. On the other hand, if the distance exceeds 2.5 meters, false alarms may occur, causing unnecessary panic. I once experienced reduced detection effectiveness on slippery roads, where the range shortened by more than half a meter, nearly causing an accident. Therefore, regularly testing the radar function is essential—lightly pressing the reverse button to check if the alarm sound is normal. Under the principle of safety first, I recommend that beginners start practicing with shorter distances and gradually adapt to the alarm rhythm. Additionally, a reversing camera can compensate for blind spots, making parking more secure.