Ultrasonic Sensor Parking System are becoming more commonly fitted to vehicles, but how do they work? Can a car’s design affect installation and will they look factory fitted?

How Do Parking Sensors Work?

As the car reverses into a space and moves closer to objects, an audible buzzer beeps more frequently.

This is usually achieved by four ultrasonic parking sensors fitted into the bumper of the car. They send out an ultrasonic wave, and if this hits an object, it bounces back to the same sensor. Information received is then relayed to the brain, allowing it to make the buzzer sounds.

Will Bumper Design Dictate Installation?

For most vehicles the shape of the car will determine where sensors are fitted. This is due to wide differences in design, between manufacturers and models of vehicles.

For cars with a center panel and separate corner bumper pieces that curve around the car, two low and two higher sensors are often necessary. If a vehicle has a metal panel behind the bumper, this usually means holes must rise above the obstruction, also avoiding interference issues.

What are the Differences Between Factory and Retrofit Fit?

Factory fitted parking sensors are the ones fitted to a car at the time of manufacture. Retrofit, often called ‘After-market’, are the ones fitted at some time after the vehicle was produced.

Factory fitted sensors have a certain look, devised by the car designer, which is difficult to recreate in aftermarket sensors. Retrofit devices are made for all cars from all manufacturers, and consequently have their own distinctive look.

It could be argued that some of the latest aftermarket designs are better due to their small, discreet shape. They are also constantly being redesigned for better looks or usage, and not devised and forgotten like factory ones.

What Size?

Sensor heads are getting smaller. Small is definitely less intrusive although they may have limited colour options, for example only available in black or silver.

Generally it is best to go for the smallest sensor heads possible, as once a hole is drilled it cannot be made smaller.

Do I Need Front Parking Sensors?

Factory fitted front parking sensors are integrated into the vehicle’s ECU. They will automatically switch on, and instinctively sense if you begin a parking manoeuvre. Aftermarket versions, with the same functionality, can be expensive and are not available for all vehicle models.

A realistic option for front sensors is to use a switch. This avoids the system becoming active when moving slowly, for example in a traffic jam, but means the driver switches on the system before beginning to park.

It is also worth noting that generally drivers can see the front of their cars. This means that while rear parking sensors are a significant help when parking, the gains from front ones are limited.

Have your rear parking sensors fitted by a professional. For more information contact us.


The Head-up Display (HUD) a safety device that is only in some cars and should be in all cars, instead of drivers looking down at the dashboard. The speed, temperature and any warning is projected out through the windscreen and across the bonnet. The driver can look through it and still see the road ahead and other traffic or animals or pedestrians coming to cross the road ahead. With the cost of electronic hardware falling, as shown by low-cost GPS devices, there is no reason why low-cost head-up displays cannot be manufactured and installed in all cars, vans, trucks and buses. The message is safety first.

Why does it take the Governments so long to get the message, after decades of use in military fighter jets, helicopters and transporters the case for making it law is compelling and needs action to encourage wider usage by all drivers. Governments show accident films on TV to discourage drink driving, but seem to be missing the point about car HUD. Since anything that helps keep the driver more awake and aware must reduce accidents.

Maybe it’s the cost of training drivers or getting them to pay more for their cars is seen as a vote looser and therefore the Governments are reluctant to enforce the use of HUDs in as many cars as possible. Drivers wearing glasses or contacts can still see through the projected HUD display and there is no reflection. The projected beam can sense light changes and adjust to meet different conditions and enhance drivers vision and safety.

 

 


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A car air purifiers mechanism is very simple. A simple fan is attached to the opening of the purifier. This assists the flow of the ionizers. Despite its efficiency, ionizers are very easy to maintain. Since they have no filter that needs to be cleaned on a regular basis, all you have to do is install it and let it do its function. For car-owners who want their car to smell good sans the harmful air toxins, scented car air purifiers are also available. In fact, scented car air purifiers are available in an assortment of scents such as lemon, pine, fresh, and many more. Click the links below to find the best deals on a car air purifier for your vehicle breathe better air today.

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