Comparison of Video Parking Guidance and Ultrasonic Parking Guidance - Tigerwong

At present, there are two main schemes for guiding reverse car search in the market: Video scheme and ultrasonic scheme. What are the differences between them? How should we choose? First of all, their collection methods are different. The video scheme uses the monitoring camera to monitor the parking space in real time, capture the parking space image, process and judge the use of the parking space, and identify the license plate number at the same time. The ultrasonic scheme adopts the principle of ultrasonic ranging, transmits ultrasonic waves to the parking space, and then judges whether there are vehicles on the parking space according to the echo. Secondly, their communication methods are different. The video scheme adopts TCP / IP protocol, which has fast transmission speed, convenient wiring and convenient expansion and upgrading; The ultrasonic scheme adopts can bus, which has good stability, but the RS484 has average stability and transmission speed. Third, they have different system functions. The video scheme has two functions: parking space guidance and reverse vehicle search, and can monitor and record; The ultrasonic scheme generally only has the parking space guidance function. If the reverse vehicle search function is required, an independent card swiping vehicle search system needs to be added. The vehicle positioning machine should be installed next to the parking space. It is not convenient for users to swipe their cards for positioning when getting off. Moreover, the two systems are independent, with a large number of equipment to be installed and cumbersome construction wiring. Generally speaking, The video scheme adopts advanced video detection technology, which is highly intelligent and has obvious effect in reverse vehicle search. As long as the user inputs the license plate number on the vehicle query machine, the screen will display the best route to pick up the vehicle. Moreover, due to the TCP / IP protocol, there are more extended applications, such as connecting to the parking lot WiFi through a smart phone, You can query the location of the vehicle on the mobile phone, etc. Compared with the ultrasonic scheme, it is not so advanced, but the cost of this scheme is relatively low. If it only needs to meet the basic parking space guidance, it is still a good choice.