Abstract: A parking management system and a parking management method are disclosed. The parking management system includes a control device and a parking space boundary indicating device. The control device is configured to acquire size information of a vehicle to be parked and information of the vacant area where no vehicle is parked in a parking lot, determine parking area information of the vehicle to be parked according to the size information and the information of the vacant area, and send the parking area information to the parking space boundary indicating device; the parking space boundary indicating device is configured to form parking space boundary lines by shedding light on a parking area according to the parking area information.

Abstract: The present disclosure provides a rapid passing method and device for a target vehicle. The rapid passing method for the target vehicle includes: determining a passing route of the target vehicle according to a place where the target vehicle is located and a destination; acquiring position information of the target vehicle in real time; and controlling lane indicating devices in the passing route to indicate a special-purpose lane used by the target vehicle in the passing route according to the real-time position information and the passing route of the target vehicle, and controlling traffic lights to indicate vehicles disturbing passing of the target vehicle to stop driving when the target vehicle passes through an intersection.

Abstract: A parking management system and a parking management method are disclosed. The parking management system includes a control device and a parking space boundary indicating device. The control device is configured to acquire width size information of a vehicle to be parked and information of the vacant area where no vehicle is parked in a parking lot, determine parking area information of the vehicle to be parked according to the width size information and the information of the vacant area, and send the parking area information to the parking space boundary indicating device; the parking space boundary indicating device is configured to form parking space boundary lines by shedding light on a parking area according to the parking area information.

Abstract: The present invention discloses a phase shifter, which comprises at least two layered chambers, wherein, in each chamber two parallel-arranged metal guide sleeves and a U-shaped conductor are set, the two free ends of the U-shaped conductor are respectively inserted into the two metal guide sleeves, and the free ends of the U-shaped conductor move relatively to the metal guide sleeves so as to change the phase of the output signal of the phase shifter. Using the phase shifter provided in the present invention enables the phase control of each radiating element to be very convenient. Furthermore, the phase shifter is simple in structure and inexpensive.