Case Study of Parking Guidance System in Shenzhen Jingji Financial Center
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Introduction to Shenzhen Kingkey Financial Center Project
Shenzhen Kingkey Finance Center Plaza (Kingkey Finance Center Plaza), also known as “Caiwuwei Financial Center”. Located in the financial and cultural center of Luohu, Shenzhen, it covers an area of 47,000 square meters and a total construction area of 380,000 square meters. It is a super-large comprehensive project integrating financial offices, six-star business hotels, high-end apartments, and large shopping malls. The Kingkey Financial Center was topped off on February 23, 2011. The actual 446-meter building surpassed the current Shenzhen’s tallest building, the 383.95-meter “Diwang Building”, making it the tallest building in Shenzhen.
The parking lot of Kingkey Financial Center Plaza consists of 2 underground, 3 underground and 4 underground levels, with a total of 2083 parking spaces. Each floor is designed for two lanes with one entry and one exit. Among them, the 4th floor underground is the owner’s parking lot, which is not open to the public; the second and third underground floors are public parking lots. Since Jingji Center is located in the central area of the city, the main building scale is large and covers a wide area, so the parking pressure of the parking lot is also greater. In order to effectively help channel the traffic flow around the financial center, guide the parking of vehicles, and improve the parking efficiency, the owner finally chose Xiamen Ketuo’s parking guidance system through multiple investigations and comparisons, which scientifically and rationally realized the efficiency of the parking flow and low-carbon parking.
Introduction to Parking Guidance System
The parking guidance system is mainly suitable for large and medium-sized underground parking lots. It is widely used in public parking lots such as office buildings, railway stations, shopping centers, and residential buildings. Before the car owner drives into the parking lot, he can learn about the current number of vacant parking spaces through the general entrance parking guidance screen located at the entrance of the parking lot; after entering the parking lot, indoor parking guidance screens are installed above each fork in the parking lot. The car owner can choose the parking area according to the direction indicated on the guide screen and the number of empty cars. There is also a parking indicator light above each parking space. The indicator light is green to indicate that the parking space is empty; red indicates that the parking space has been parked. The vehicle owner can park the vehicle according to the lighting condition of the indicator light.
The parking guidance system realizes rapid guidance of vehicle parking, which improves the utilization rate of parking lots and the parking efficiency of vehicle owners.
Working principle of parking guidance system
Through the ultrasonic parking space detector installed above each parking space, real-time collection of vehicle information of each parking space in the parking lot. The node controller connected to the detector will collect the information of each connected detector according to the polling method, and according to certain rules, the data will be compressed and encoded and then fed back to the central controller. The central controller completes the data processing, and The processed parking space data is sent to each parking space guide screen of the parking lot to display the vacant parking space information, so as to realize the function of guiding the vehicle into the vacant parking space. The system transmits the data to the computer at the same time, and the computer saves the data to the database server. The user can query the real-time parking space information of the parking lot and the year, month, and day statistical data of the parking lot through the computer terminal.
Introduction to Shenzhen Jingji Financial Center Project Plaza Project Implementation System
The whole system adopts the 485 network line communication mode, abandoning the past RVVP wiring mode, and adopts the network cable for connection. The equipment interfaces are all standard RJ45 interfaces, which realize the modern means of easy installation and maintenance of product interfaces, and make system product upgrades more stable and reliable.
General entrance parking space guide screen
Install the general entrance parking space guide screen at the entrance of each parking lot to display the total remaining parking space information of the parking lot. The display screen is composed of high-brightness outdoor LED module, drive circuit, control circuit, bracket and other parts. It receives the parking statistics information of the central controller (CCU), displays the current number of free parking spaces in the parking lot in digital and text form in real time, and prompts the drivers of vehicles preparing to enter the parking lot, which can be used 24 hours a day. The internal program can also be modified at any time according to user requirements to display other information required by the user.
Indoor parking LED guide screen
It is recommended to install indoor parking guidance screens at important junctions in the parking lot. According to the actual situation of the parking lot under the Beijing base, a total of 48 parking guidance screens have been set up, including 5 three-way guidance screens and 43 two-way guidance screens. The display screen is composed of indoor high-brightness LED module, drive circuit, control circuit, bracket and other parts. It receives the output information of the central controller, displays the parking position in the form of numbers, arrows and text, and guides the driver to quickly find the empty parking spaces allocated by the system.
Ultrasonic parking detector and parking indicator
Each parking space is equipped with an ultrasonic parking space detector and parking space indicator. Ultrasonic parking space detectors are installed directly above each parking space to detect whether the parking space is occupied. The detector adopts the principle of ultrasonic distance measurement, which can reliably detect whether the vehicle is in the parking space, avoiding infrared, microwave and other detection methods that are easily affected by the external environment. For the problem of false alarms caused by changes or interference, ultrasonic waves from top to bottom are used to analyze the reflected waves of the car or the ground to accurately measure the parking situation of each parking space.
The parking indicator is installed on the top of each parking space and is directly controlled by the ultrasonic parking detector. It is used to display whether the parking space is occupied or not. The green light is on when the parking space is free, and the red light is on when the parking space is occupied. The driver can understand the distribution of vacant parking spaces from a distance by looking at the parking indicator lights.
Node controller
The node controller is used to group and manage the ultrasonic parking detectors, use a round-robin method to cyclically detect the status of the connected detectors, and transmit relevant information to the central controller. The node controller is the middle layer of the three-layer network bus of the parking guidance system, which plays an important role in ensuring the safety, reliability and efficiency of the system. A node controller can connect 40-60 ultrasonic parking space detectors. A total of 39 node controllers are configured in this project.
Central controller
The central controller is the core of the entire system and is responsible for the data processing and control of the entire parking guidance system. One central controller can connect to 60 node controllers. Only one central controller is required in this project.
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