Vision Techniques

An explanation of reversing sensors for your vehicle

Vehicle safety experts often speak of the importance of reversing sensors, but not many people actually understand what they are and how they work.

If you are going to invest in a vehicle safety product that includes one, it is important to at least understand what you are buying.

When people talk about sensors more generally, it is usually a broad term for a device used to detect change or movement in an object.

Sensors can be made of nearly any common material type and are usually found mounted to a fixed object. There are often wireless options available.

Reversing sensors for vehicles

Reversing sensors are safety devices that work to help drivers recognise any on-site dangers. They are often attached to the rear of the vehicle.

They generally work by sending out or radio waves. The sensor box picks up electromagnetic waves, which bounce off the surface of the object. Reversing sensors check either the length or frequency of the waves.

Certain waves along the electromagnetic spectrum have certain lengths and sizes.

A reversing sensor measures those wave types and determines how the size and speed of a moving object.

The larger the object moves, the faster it reflects a totally different carrier wave signature. The same is true of smaller objects, as well.

Ultrasonic proximity sensor

Older reversing sensor systems were not very effective during poor weather conditions. This has led to the invention of ultrasonic proximity sensors.

Since ultrasonic waves are high in frequency and short in length, they are strong and can diffuse through various substances.

The reverse sensor emits an ultrasonic beam from its sensor box. The human ear cannot hear ultrasonic waves so an alert device is installed to let people know.

To install reversing sensors, you need to have several different sensors placed as the back of the car. Electromagnetic reversing sensors require much less work to install with little maintenance.

A proximity sensor is an affordable solution for no touch detection. They are the preferred choice for majority of applications requiring accurate, non-contact detection of objects.


1. Increased awareness reduces risk of damaging your car.

2. Avoid any type of problem related with the reverse parking you can install the reversing sensors in your car.

3. Less likely to damage your vehicle or other objects because you can judge the distance better.

4. More easily you the facility to park your vehicle in different angles.

5. Reduce your accidents.