China's license plate recognition system was developed later than its international counterparts. As a key innovation in intelligent parking systems, it effectively enhances the utilization of parking facilities, reduces traffic volume caused by searching for parking, shortens waiting times due to parking, and improves the overall efficiency of the traffic system. It is poised to become the mainstream system for large-scale parking facilities in the 21st century. The license plate recognition system represents a significant leap forward in parking management technology with the advancement of intelligent technology. Its development has facilitated the realization of fully intelligent parking management, not only ensuring necessary parking but also reducing additional traffic volume within cities.
A widely used parking guidance technology in China is single-point data detection. Typically, it operates on the principle of ultrasonic ranging to collect real-time parking data in parking lots. Taking the license plate recognition system, which is frequently used in domestic engineering applications, as an example, the system collects data by installing ultrasonic parking sensors at each parking space, detecting the current parking status of vehicles in real-time. As a result, the data on available parking spaces within the parking lot can be obtained. This method's significant advantage is its high data accuracy, enabling the precise counting of vehicle trips through the real-time collection of data for each parking space. Therefore, this approach is also the mainstream application method for parking guidance both domestically and internationally.
There are various methods to calculate entrance and exit counts, including geomagnetic technology, loop detection, and video counting, among others. These methods share a commonality: they are set up at parking lot entrances and exits to determine vehicle entry and exit, thereby obtaining information about the availability of parking spaces. Loop detection identifies the presence of vehicles by sensing for metallic objects within the coil area. Video counting tallies the vehicles entering and exiting the parking lot, providing data on traffic flow and the number of available spaces. Collecting parking data through entrance and exit counting can lead to errors, which is why this technology is often phased out in parking lots newly adopting license plate recognition systems.
That wraps up our discussion on the Chengdu license plate recognition system. See you next time for more content.
