Two technologies for automatic number plate recognition, RFID vs ANPR technology.
The following compares two main automatic number-plate recognition technologies, RFID vs ANPR in six aspects: resource allocation, detection rate, data accuracy, environmental tolerance, multi-channel processing, and security.
Security is one of the key features of automated vehicle identification systems, especially in the tollhouse and parking lot charging business.
What is ANPR?
ANPR is an automatic number plate recognition system.
Today, automatic number plate recognition systems (ANPRs) are also commonly used to identify vehicles, but people are paying more attention to two aspects of ANPR. One is the high error rate of automatic vehicle recognition, and the other is the government in ANPR technology spending.
Applying radio frequency identification technology to vehicle identification systems can solve the technical and economic problems faced by automatic vehicle identification systems in a safer and more economical way.
The National Highway Administration uses an infrared camera with Optical Character Recognition (OCR) to license the vehicle for road toll collection, law enforcement, and traffic monitoring near gates and parking lots. Read.
RFID technology attaches electronic tags primarily to windshields and other vehicle locations and uses RFID infrastructure fixed at entrances and exits and parking lots to identify vehicles passing through.
The following compares two main automatic number-plate recognition technologies, RFID and ANPR, in six aspects: resource allocation, detection rate, data accuracy, environmental tolerance, multi-channel processing, and security.
Resource deployment in RFID vs ANPR technology
User provisioning is the process of creating, maintaining, and deactivating access and privacy while ensuring the security of corporate resources.
Today, ANPR technology is presented primarily in the form of license plates. RFID technology requires electronic tags to be attached to the windshield of the vehicle. Both of these vehicle identification technologies are used in combination with back-end systems. The latter primarily associates an identifier (license plate or RFID tag) with a user’s account. The data retrieved through the RFID reader is stored locally and the cloud or server provides the relevant data.
ANPR is a government-registered license plate recognition system and a kind of path, so it is a technical option for vehicle access systems, mainly because of low supply costs at highway tollhouses and parking lots. Often used. You can use it at any time.
Many states and countries now use federally issued RFID transponders, which require drivers to attach RFID electronic tags to the windshield of their vehicles. Among them, Florida drivers attach a SunPass tag to the vehicle and pay tolls and road and parking fees.
Detection rate in RFID vs ANPR technology
A consistent measurement method is required to compare the detection rates of the two technologies ANPR and RFID. For this purpose, the total number of vehicles detected by ANPR technology via an external trigger such as a loop detector is compared to the number of tags or license plates captured by RFID technology.
ANPR technology based on visual recognition requires powerful optical, computing, and digitization capabilities that slow down license plate recognition per second. Due to different environments and different shutter speeds, the ANPR system can detect license plates at speeds of 160 kilometers per hour (100 miles per hour) by car.
Long-distance UHF RFID technology actually better meets the challenges of high-speed vehicle identification. Currently, RFID systems are used to recognize license plates on high-speed vehicles, and even if they pass through tollhouses at very high speeds, they do not pass at low speeds. Car recognition and certification have been tested at more than 150 mph.
The Massachusetts Department of Transportation (MassDOT) has demonstrated the accuracy of RFID systems. Compared to previously used paid battery panel systems, the E-ZPass system has increased RFID transponder power-based charging by more than 99% in six months.
Data accuracy in RFID vs ANPR technology
Data accuracy is a measure of how well a vehicle is captured and transmitted.
RFID uses the Air protocol and combines Cyclic Redundancy Check (CRC) as a way to prevent false data transmission between electronic tags and readers. ANPR relies on software algorithms and voting logic to determine the likelihood of recognizing characters. RFID provides more accurate data than ANPR because it can self-check the relevant data read.
The data accuracy rate of ANPR technology is not as high as the data accuracy rate of RFID technology. The main problem is that ANPR has 4 incorrect data for every 100 reads.
The IT West report shows that in the UK, the ANPR system uses 9,000 cameras and stores up to 30 million vehicle records every year, and shows that this system carries up to 1.2 million false license plate readings every day! This is equivalent to more than 400 million per year Wrong readings.
Environmental Immunity in RFID vs ANPR technology
As an optical technology, ANPR technology is sensitive to environmental factors, for example, snow and dirt can obscure the license plate number. Also, the glare of the vehicle’s sun headlights and the white flashbacks make it difficult for the camera to distinguish. Cover the license plate number. In addition, license plates with red numbers and letters and infrared cameras form a very low contrast, so ANPR significantly reduces the license plate detection rate.
RFID technology is protected from external factors such as the environment. The tag can also recognize a vehicle’s license plate at amazing driving speeds or from other harsh environmental conditions in the absence of fog, snow, paint, and light. However, RFID devices have a longer lifespan than optical identification devices and require minimal maintenance to increase system configuration flexibility.
Multi-channel processing in RFID vs ANPR technology
One RFID reader can manage two lanes. Each RFID reader is uniquely identified based on the vehicle’s ID information to distinguish lane assignments.
ANPR technology requires multiple card readers to work together to recognize license plates in multiple lanes. This will increase the cost of ANPR as you will have to purchase more hardware for maintenance. However, RFID technology can help reduce these costs. This is because RFID has multiple antennas to output data and can provide data support to different read points. RFID technology is a small part of the hardware cost of a vehicle identification system, which could save significant hardware costs compared to purchasing multiple hardware components to achieve the same result.
Security in RFID vs ANPR technology
Security is one of the most important functions of vehicle identification, especially when the vehicle makes financial transactions such as charging in a parking lot. However, ANPR technology (Automatic Number Plate Recognition System) does not have a built-in safety mechanism. For example, a high-quality fake license plate image affixed to the original license plate can actually deceive ANPR’s camera system.
Some forms of RFID, such as RFID tags used for inventory and asset management, do not have sufficient security. However, the RFID technology used in vehicle license plate recognition systems has the ability to embed a password in the transponder, so system data cannot be accessed without a password. There is no doubt that this will improve the security of your access system.
RFID technology also has encryption capabilities. It is convenient if the password itself is key-encrypted, as it provides secure access to the control system. With encryption, you cannot access the control system without the key.
Currently, the best form of security is NXP Semiconductors’ UCODE DNA chip. It combines tamper-proof features such as encryption algorithms to prevent thieves and counterfeiters and provides a fast, high-performance access control system
RFID technology has proven to save millions of dollars by reducing numerous false reads and provide the latest reliable and secure solutions.
At the same time, RFID reduces read-to-read inaccuracies caused by external factors, thereby increasing configuration flexibility.
Another solution is the hybrid approach. Solutions using ANPR and RFID technology prevent unauthorized vehicles, overcome ANPR inaccuracies in vehicle identification, and enable vehicle access systems to achieve good operating results.
In fact, many countries have RFID technology in their vehicle access systems, and RFID chips are properly installed or embedded in-vehicle license plates.
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