Parking guidance system working principle and three kinds of communication methods

Configuration of parking guidance system is the important way to improve parking service, with the improvement of service consciousness, more and more parking lots will be equipped with parking guidance system.The working principle of parking guidance system is how to?Parking guidance system consists of four subsystems: data acquisition subsystem, data transmission subsystem, real-time data processing subsystem, information issue subsystem.By the ultrasonic parking detectors, parking lights, information release of screen, detector, management software.

working principle is as follows:
in each parking installed above the ultrasonic parking detectors, parking information collected through ultrasound real-time detection, and then through the node controller to transmit the data to a management center and management center for statistical data processing, the parking information feedback to the parking lot the parking information display, so the owner can through the display, real-time understand the parking situation, implementation guidance function.

parking guidance system have three ways: RS485, LAN (TCP/IP), WIFI (wireless).

1. RS - 485 is shielded twisted-pair cable through the parking lot node controller together, characterized by long transmission distance, strong anti-interference ability, low cost, the disadvantage is that the transmission rate slower, wiring problems.
2. LAN (TCP/IP) is the node controller via Ethernet cable connection, characterized by communication speed, simple extension.
3. Wifi can avoid wiring way, reduce construction, it is through the wireless receiver node traffic signal controller, and through the transmission of network switches to the central controller.