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With the rapid development of the city and the improvement of citizens’ living standards, the number of various vehicles in the city continues to increase, followed by a corresponding increase in the demand for parking spaces in the main commercial and residential areas of the city, such as Suzhou, Nanjing, Shanghai, etc. For many years, first-tier cities in East China have planned to build large-scale three-dimensional parking lots in several major transportation hubs throughout the city. The construction of large parking lots will help to improve the tightness of parking spaces, but at the same time it will also bring about management problems for large parking lots. For example, in the parking lot of Shanghai Grand Gateway, there are nearly 1,200 parking spaces. Owners who occasionally park their cars often spend more than half an hour searching for their vehicles because they are confused about the original parking position.
Based on the above requirements, Suzhou Xindao Intelligent Technology Co., Ltd. launched a wireless vehicle detector with RFID technology combined with geomagnetic induction, which can effectively solve the problem of parking space detection and statistics in large parking lots. It can effectively detect whether there is a vehicle in the parking space, and transmit the relevant information to the reader via RFID wirelessly. After the reader receives the information, it can be uploaded to the computer system of the control center immediately, so as to intelligently realize the vehicle storage management. Provide data basis for vehicle guidance. The product is designed based on the RFID micro-power technology platform, which can be maintenance-free for more than five years, and has certain advantages in terms of performance, cost, system installation and maintenance.
Program features
High accuracy: The earth’s magnetic field is basically constant within a few kilometers, but large ferromagnetic objects will cause huge disturbances to the earth’s magnetic field. The influence of time on the geomagnetism will reach a fraction of the intensity of the geomagnetism, so the use of geomagnetic sensors to detect vehicles has extremely high sensitivity.
It is easy to install and maintain, and only need to check the geomagnetic sensor during maintenance. The detection point is not easy to be damaged and is not affected by road movement.
The geomagnetic sensor uses the change of the earth’s magnetic field when ferromagnetic objects pass through to detect, so it is not affected by the climate
Two-way high-speed data exchange can be realized between the detector and the receiver.
High reliability, working temperature -40℃~85℃, waterproof and shockproof.
High anti-interference: There are no special requirements for various interference sources on site, and the installation is convenient and simple.
There is no need to apply for and pay for the ISM microwave frequency band that is open worldwide.
Ultra-low power consumption: safer and healthier for the human body.
The implementation of the above scheme is relatively simple. Each parking space is equipped with a wireless RFID ground sensor without a lot of construction; each reader can cover 50 parking spaces, and the number of reader applications is small. The reader and the computer can be connected through a 485 hub. Mature.
In order to achieve the overall intelligent effect, an intelligent barrier system is implemented at the entrance and exit of the parking lot. For fixed vehicles, a long-distance active electronic tag can be issued or sold. The tag can be placed at any position in front of the windshield of the vehicle; install supporting facilities at the entrance and exit The reader is connected to the weigand controller. When a fixed legal vehicle enters the venue and is about 5-10 meters away from the barrier, it can automatically recognize that the barrier is opened and the vehicle enters. At the same time, the electronic tag information is recorded in the computer system and bound to the fixed parking space to determine whether the fixed parking space detected by the wireless ground sensor is a legal vehicle. That is, when a fixed parking space owner has a vehicle parked here in the future, the system will immediately call the guards to avoid unnecessary trouble when the owner who actually buys the parking space comes.
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