Vehicle personal identification system of ETC electric no-parking charge

Abstract

The invention discloses a kind of recognition system of vehicle ID of ETC electron without stopping to charging, which includes IC card of vehicle-carrying radio frequency containing the basic information of vehicle and several information channels connect with several sensors, and the information channels is combined by anabranch model of play chess information and the ratiocination algorithm of Bayes's network to complete the precious identification for vehicle ID. The invention anabranches the information of vehicle ID in non-contact intelligent IC card based on the anabranch theory of playing chess information, and the several source information can reach the optimized reliable judgment by the competition and the corporation in the anabranch model, and identify the real ID of vehicle, and ensures the reliability of identification, and the precision can reach above 99.99%, and the invest is little, and the reliability is well. The recognition system of vehicle ID does not occupy the source of host computer and improve the work efficiency of host computer. The identifying device is small and easy to install.

Description

technical field [0001] The invention relates to a vehicle identity recognition system in ETC electronic non-stop charging. Background technique [0002] Since the emergence of ETC electronic non-stop toll collection technology in the early 1990s, it has been widely used in North America, Europe, Japan, Australia, Singapore and other places. During the Ninth Five-Year Plan period in my country, the Ministry of Communications organized the "Non-stop Toll Collection System Industry under the Network Environment". Joint research project. The Highway Science Research Institute of the Ministry of Communications and the Xi'an Highway Science Research Institute undertake the preliminary scientific research tasks, and carry out demonstration project construction in Guangdong Provincial Department of Communications, Beijing Municipal Department of Communications, and Jiangsu Provincial Department of Communications. At the same time, all major colleges and universities and research ins...

AI Technical Summary

Problems solved by technology

Although license plate recognition has been researched by many units in China, and the technology is relatively mature, it is still far from ideal in terms of actual application.

Because the on-site license plate recognition environment is very complex, affected by various factors such as the license plate itself, weather, light, etc., it is difficult for some license plates even to be recognized by humans.

For example, the most advanced license plate recognition system (Hanwang Eye) of Beijing Hanwang Company in China, when the parameters are adjusted to the best state, the on-site license plate recognition rate is only 96%. Adjust it several times, otherwise the license plate recognition rate will be greatly reduced, which will greatly reduce the practicability of the system

When Chongqing implemented non-parking tolls, because the license plate recognition could not meet the application requirements, it had to manually enter the last four digits of the license plate at the exit and compare it with the license plate data recorded in the IC card. However, in this way, the vehicle had to stay at the exit for 5 seconds Above, the non-parking fee is returned to the parking fee

In addition, the ETC non-parking fee in Shanghai was also stranded due to the low accuracy of license plate recognition

Since the license plate recognition cannot meet the application requirements, it is impossible to determine whether it is an illegal IC card or the reason for the license plate recognition in the verification of the vehicle identity. Therefore, only using the license plate recognition method to verify the vehicle identity is not an effective and reliable solution. Program

[0007] (2) The model identification result is too simple to form an effective and reliable verification of vehicle identity

Using hardware to obtain car models requires ground sensing coils, magnetic induction coils, piezoelectric sensors, infrared devices and other equipment. The system is relatively complicated and the investment is relatively large. At present, it is basically no longer used.

Using software means to judge the car model by taking pictures of the vehicle and identifying the car model on the image. This method only needs one camera, but the recognition results are generally only small cars, medium cars, and large cars, and many car models cannot be judged from the appearance. Accurately distinguish between large and medium-sized passenger cars and box-type trucks, resulting in worse effect of using the model identification results as the basis for judging vehicle identity, especially in the case of non-free vehicles using free cards

[0008] Due to the above two reasons, the problem of vehicle identification that restricts the promotion of ETC in my country has not been effectively resolved.

In ETC, if the vehicle identity cannot be effectively identified, the consequences will be various: firstly, it will cause inconsistency in the identification of the vehicle identity. Illegal IC cards may also be caused by misrecognition of the license plate or model. This situation often requires parking to deal with it. When it is due to the identification of the license plate or model, the parking will give the reputation of the ETC electronic non-stop system. and toll booths have a great negative impact; secondly, wrong vehicle identification will not only cause losses to the driver, or indulge the driver's speculative psychology, but also cause a loss of fare to the toll booth

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