Parking sensors are proximity sensors for vehicles on roads designed to alert drivers to obstacles when parking. This system uses electromagnetic or ultrasonic sensors.
Video Parking sensor
Sistem ultrasonik
The system has an ultrasonic distance detector to measure distances to nearby objects through front-end sensors and/or rear bumper fascia or visually minimized in adjacent grills or niches.
The sensor emits an acoustic pulse, with the control unit measuring the return interval of each reflected signal and calculating the distance of the object. The system in turn warns the driver with an acoustic tone, the frequency indicating the distance of the object, with a faster tone indicates a closer distance and a continuous tone indicating a prescribed minimum distance. The system may also include visual aids, such as LED or LCD readings to indicate object distances. A vehicle may include a vehicle pictogram on a car infotainment screen, with representations of nearby objects as colored blocks.
The rear sensor can be activated when reverse gear is selected and disabled as soon as another tooth is selected. The front sensor can be manually activated and disabled automatically when the vehicle reaches a predetermined speed - to avoid further disturbance warnings.
Since the ultrasonic system depends on the reflection of sound waves, the system may not detect flat objects or objects that are not large enough to reflect sound - for example, narrow poles or longitudinal objects that lead directly to vehicles or near objects. Objects with vertical oblique surfaces can redirect sound waves from sensors, blocking detection. Also soft objects with strong sound absorption may have weaker detection, eg. wool or moss.
The Parking Sensor, originally referred to as ReverseAid, is a spin-off from Sonic Pathfinder, an Electronic Guidance Tool for the Blind. Both devices were created in the late 1970s by Tony Heyes while working at the Blind Mobility Research Unit at the University of Nottingham in England. After patenting the device in 1983, Heyes offered it to Jaguar Cars in Coventry. After a test drive a prototype on Heyes's car, they politely told him, "You like it because you are a one-eyed driver who can not judge distance. Real people do not want anything like this."
Heyes is working with local producers and about 150 units are built and installed for gasoline tankers, trucks and delivery vehicles. Very few are installed for private cars because some people want to drill holes in their cars.
Maps Parking sensor
Electromagnetic System
The electromagnetic parking sensor (EPS) was recreated and patented in 1992 by Mauro Del Signore. Electromagnetic sensors rely on vehicles that move slowly and smoothly toward objects that must be avoided. Once detected, the obstruction, if the vehicle stops at its approach, the sensor continues to signal the obstacles. If the vehicle then continues its maneuverability, the alarm signal becomes more and more impressive as the obstacle approaches. Electromagnetic parking sensors are often sold because they do not require holes to be drilled that offer a unique design that is secretly installed inside the bumper that preserves your vehicle 'new look'. Now they are also equipped with cameras to carry with sensors. In 2018 the US needs a camera backup with sensors on all cars.
Blind spot monitors and other technologies
Blind spot monitors are options that may include more than side-by-side vehicle monitoring. This can include "Cross Traffic Alert," "which reminds the driver to back out of the parking lot as traffic approaches from the side."
Inventor
Already in the 1970s German inventor Rainer Buchmann developed parking sensors. December 13, 1984 Massimo Ciccarello and Ruggero Lenci (see List of Italian inventors) entered in Italy a patent application for Parking ultrasonic sensors, and November 16, 1988 the Ministry of Industry granted them a Patent for industrial discovery n. 1196650.
See also
References
External links
- BMW Technology Guide: Park Distance Control
- Proxel - Principles of Electromagnetic Parking Sensor Operations
- The patented Parking Sensor in Italy
- "Blind zone danger The area behind your vehicle could be a homicide zone". Consumer Report . Consumer Union. March 2012 . Retrieved August 10 2013 .
Source of the article : Wikipedia
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