Intelligent parking lot charging system is bound to lead to the technical leap forward of parking lot management system and promote the realization of fully intelligent parking lot management. As another new part of parking lot management system, parking guidance system can not only reasonably arrange the necessary parking, but also reduce the additional traffic volume for parking in the city, At present, there are two main types of parking space guidance systems in China according to data acquisition methods, single point parking space data detection and entrance and exit counting
single point parking space data detection generally adopts the working principle of ultrasonic ranging to collect parking space data in real time. It is the most widely used parking space guidance technology in China. Taking the Ketuo parking space guidance system with the most engineering application cases in China as an example, the data acquisition of this system is to use the ultrasonic parking space detector installed above each parking space to detect the parking status of vehicles in the current parking space in real time, so as to obtain the empty parking space data in the parking lot. The biggest advantage of this method is high data accuracy. The real-time data acquisition on each parking space can ensure the accurate statistics of the number of parking spaces. Therefore, this mode is also the mainstream application mode of parking space guidance system at home and abroad
there are many ways to count entrances and exits, including geomagnetic technology, ground induction coil, video counting, etc. These counting methods have one thing in common, that is, they are installed at the entrance and exit of the parking lot to obtain the empty number of vehicles in the parking lot by judging the entry and exit of vehicles. Geomagnetic technology is to detect the change of the earth's magnetic field caused by ferromagnetic objects to judge whether there is a car passing through; The ground induction coil determines whether there is a car in the coil area by detecting whether there is a metal object in the coil area. Video counting is to count the cars in and out of the parking lot through video images, and get the parking lot related information such as the traffic flow of the parking lot and the number of empty cars in the parking lot. Using entrance and exit counting to collect parking space data is easy to produce errors. Therefore, this kind of technology has been generally eliminated by the parking lot newly invested in the parking space guidance system
the parking space guidance system is in its infancy in China, but as a major innovation of the intelligent parking lot charging system, because the system can effectively improve the utilization rate of parking facilities, reduce the road traffic volume caused by looking for parking lots, reduce the waiting time for parking, and improve the efficiency of the whole transportation system, Therefore, the installation of parking space guidance system in large parking lots in the 21st century will be a mainstream trend< br/>